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ABOUT US

MICROBO(HK) TECHNOLOGY HOLDINGS LIMITED was founded in 2014 and has industrial design and professional PI design team, which mainly manufactures air cooler, air purifier, water purifier, heater, humidifier and so on. At the same time we also the designer for home appliance customers development, design and manufacturing of home appliances accessories ---- the PCB board, DC motor and other home appliances core electronic and electrical products, customer products related to cleaner, humidifier, air cooler, and other products. So far, we have over 50 invention patents and design& unity model patents. Our production is strictly in accordance with ISO9001:2015 international quality management system and products have CB, CE certificates approved by TUV and CCC certificate approved by CQC. We provide wide ranged design, research, manufacture and sales service. Meanwhile, five plug-in, after welding production line , automatic plug-in machines and other professional equipment can be completed with the customer to do the PCB, DC motor and other home appliances core electronic and electrical product’s design, proofing, testing and certification of a series of services arming to world-wide customers like Southeast Asia, Taiwan, Middle East, South America and Europe. In addition, with its annual production of 1.5 million sets including air cooler, heater and humidifier and so on, wins a high reputation for top quality, good price and excellent service among our customers.  Enterprise Vision:We committed to pay more attention to human survival and quality of life, and focuses on the quality of the air, water, and LED lighting, and at the mean time to be a most competitive enterprise that contributes to these industries in the future.Enterprise Mission:We always takes it as its own duty to improve the quality of air, drinking water and provides more valuable products in the course of constant research, design and innovation, and at the mean time creates more valuable employment environment and investment returns for employees and shareholders. 

NEWS
Cool Your Home Smartly: 45L Energy-Saving Evaporative Air Cooler
2026-01-28
No need to endure the harsh blast of air conditioners or worry about regular fans drying out the air. This stylish and versatile air cooler with a 45L large-capacity detachable water tank is the perfect choice for creating a fresh and comfortable home environment.Boasting a minimalist black-and-white design and smooth-rolling wheels, it requires no complicated installation and can be easily moved between the living room and bedroom. The clear LED digital display keeps all settings at a glance, and the 4 adjustable wind speeds let you customize the airflow freely—whether it’s a gentle breeze for a quick nap or powerful cooling for sweltering afternoons, it precisely meets all your needs.The water shortage warning function effectively prevents dry operation of the device, and the 1-24 hour timer ensures you’re greeted with a cool room when you wake up or return home. The included remote control supports 6-meter long-distance operation, allowing easy adjustments right from your sofa. The optional humidity indicator helps you monitor indoor humidity levels, and the 15-minute delayed shutdown function avoids discomfort caused by sudden temperature drops after turning off the device.Energy-efficient and cost-saving, this air cooler delivers a mild and continuous cooling experience at a fraction of the cost of an air conditioner. It’s ideally suited for spaces of 45-60 square meters, making it the perfect pick for anyone looking for a smarter way to beat the summer heat.
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Introducing the RBW LL-V6A – Premium Performance Meets Elegant Design
2026-01-24
At Rainbow Way, we believe that comfort should never come at the cost of quality or health. Our flagship model, the RBW LL-V6A Series, redefines evaporative cooling with its powerful performance, intelligent features, and refined aesthetics. Engineered for spaces between 45–60 m², the LL-V6A delivers an impressive maximum airflow of 4,500 m³/h with a wind reach of 14 m/s, ensuring rapid and effective cooling even in larger rooms. Powered by a 100% copper capacitor motor with double ball bearings, this unit operates quietly (≤45 dB), efficiently, and reliably—offering long-term durability while consuming less than 1 kWh over 10 hours of use.The LL-V6A is equipped with a 45L water tank, designed to last up to 12 hours on a single fill, minimizing user intervention. Its 5090 high-density honeycomb cooling pad, made from eco-friendly log paper without dyes or odors, ensures maximum water-air contact for superior evaporation and a service life of up to 8 years. To maintain hygiene, the unit features a 15-minute delayed shutdown function that dries the cooling pad post-use, preventing mold and mildew buildup.Safety and convenience are central to the design: l60-mesh high-density dust filter with easy-remove functionality lAutomatic oscillation (left/right and up/down) l24-hour timer, LED temperature display, and ionizer for cleaner air lWater shortage protection with audible alarm lConstructed entirely from 100% brand-new ABS plastic—never recycled materialsAvailable in sleek black, grey, and white, with multiple height variants (LL-V6A5 through LL-V6A1), the LL-V6A combines form and function for modern homes and offices. Experience intelligent cooling, engineered with care.
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RBW LL-16A – Versatile Cooling with Advanced Customization
2026-01-23
The RBW LL-16A strikes the perfect balance between performance, flexibility, and user-centric design—making it an excellent choice for mid-sized environments ranging from 25 to 30 m².Featuring a robust 220W pure copper motor and dual centrifugal turbines, the LL-16A generates 1,600 m³/h of airflow with a wind distance of 12.5 m/s. Its 30L water tank supports extended runtime, while optional 3-side cooling pad configuration (standard: 1 pad) enhances evaporation efficiency for faster cooling in humid climates.This model stands out with its human-centered innovations: · Electronic touch control with remote (up to 6-meter range) ·  Full 3D oscillation (left/right + up/down) for even air distribution·  24-hour programmable timer and ultra-quiet sleep mode·  Rear water inlet design for easy and smooth water refilling  · Ionizer and temperature display for real-time environmental awarenessConstructed with high-grade ABS plastic, the LL-16A resists impact, discoloration, and degradation—ensuring lasting beauty and structural integrity. Unlike competitors using second-hand plastics, Rainbow Way guarantees 100% virgin materials, free from harmful residues.With a shipping-friendly design (442 units per 40’ HQ container) and optional air purifier integration, the LL-16A is equally suited for residential, commercial, or hospitality applications. It’s more than cooling—it’s intelligent climate control, reimagined.
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RBW LL-19A – Compact Power for Everyday Comfort
2026-01-21
Designed for urban living and smaller spaces, the RBW LL-19A brings smart, energy-efficient cooling to rooms up to 25 m²—without compromising on innovation or build quality.Despite its compact footprint (290 × 350 × 700 mm), the LL-19A packs a punch with a centrifugal dual-turbine system, delivering 1,000 m³/h of airflow at speeds up to 12 m/s. With just 80W of power consumption, it uses less than 1 kWh over 10 hours—making it a sustainable alternative to traditional air conditioning.A thoughtfully sized 12L detachable water tank supports up to 12 hours of continuous operation, reducing refill frequency. The tank can be inverted onto the unit body during off-season storage, lowering overall height by 20 cm for space-saving convenience.Key highlights include: · Four-speed settings (High / Medium / Low / Sleep) with ≤45 dB noise in sleep mode · Bluetooth speaker option (+$5)—perfect for outdoor gatherings or relaxing indoors · 60-mesh dust filter and 5090 cooling pad for clean, fresh air · Ionizer technology that binds airborne particles for healthier breathing · Dual water-fill methods: top-fill or rear access—no bending required · 360° caster wheels for effortless mobilityBuilt with 100% new materials and certified safety features—including a protective safety net and automatic pump shutoff—the LL-19A is ideal for bedrooms, dorms, home offices, or patios. It’s not just an air cooler; it’s your personal comfort companion.
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ABS material portable evaporative air cooler with 15L water tank – It's Worth Owning!
2026-01-17
Hello everyone! Today I'd like to recommend a cooling essential that combines safety certification, durable quality, and practical design—the CB&CE-certified portable evaporative air cooler featuring an ABS body and 15L water tank. With its outstanding performance, it has become an indispensable cooling companion for my family during summer.Here's why it stands out:First and foremost, the dual CB&CE international certifications serve as its most reliable quality guarantee. This means the product has passed rigorous safety and performance tests. Whether it comes to electrical safety or operational stability, it complies with international standards, providing you and your family with the utmost peace of mind while enjoying cool air.Second, the air cooler' s body is made of durable ABS material. This material boasts high strength and impact resistance, so it won’t get damaged easily from daily bumps and knocks. It is also heat-resistant and deformation-resistant, offering a much longer service life compared to ordinary plastic bodies. Plus, it is lightweight and portable, allowing you to effortlessly move it to any space that needs cooling, such as the living room, bedroom, or study.Furthermore, the 15L large-capacity water tank is a true endurance champion. A single refill can deliver continuous cooling for 8–12 hours, eliminating the need for frequent water top-ups. You can enjoy uninterrupted cool breezes whether you're working during the day or sleeping soundly at night. Paired with a honeycomb cooling medium, it enhances cooling efficiency, quickly lowering the indoor temperature while humidifying the air—saying goodbye to the dry discomfort often felt in air-conditioned rooms.As a portable evaporative air cooler, it is not only energy-efficient (with a power consumption of just 100W) but also equipped with four wind speed settings and an oscillating function. It can evenly cool rooms ranging from 15 to 20 square meters, ensuring every corner is filled with comfortable coolness. What’s more, it operates quietly, so it won’t disturb your work, study, or rest. It is the ideal cooling solution for renters and small-family households alike.If you're searching for a cooling device that is safe, reliable, durable, and long-lasting, this CB&CE-certified portable evaporative air cooler with an ABS body and a 15L water tank will never let you down. It perfectly balances practicality and cost-effectiveness, helping you breeze through a cool and comfortable summer!
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Basic knowledge and selection method of household air coolers
2018-08-14
Basic knowledge and selection method of household air coolersCompared with the air-conditioning fan on the market at present, the cooling fan is its upgrade version, not only the refrigeration effect is obvious, but also does not need to add Freon, very green environmental protection. The cold air can be divided into industrial cooling fan and household cooling fan. Household air conditioning is different from air conditioning, it is no Freon, is the refrigerant is water, is very environmentally friendly. And the household air-conditioning fan with wet curtain as evaporator is better than the air-conditioning fan in the shopping mall. The disadvantage is that it can not achieve constant temperature, can not make the whole room cooling significantly, the general power of the home air conditioner suitable for small areas of the room. But the air contains high oxygen content, won't get air conditioning disease, and save electricity and environmental protection. At present, there are many household air conditioners on the market, we may have a dazzling choice, the following with Guangdong Ruiping Hui to understand the relevant knowledge of the household air conditioner bar!What is a home cooling fan?Household air conditioners are also called household environmental protection air conditioners and evaporative cooling fans. No compressor, no freon, refrigerant is water, belongs to environmental protection and energy saving air conditioning. It works by pumping water from the tank uninterruptedly with a circulating water pump and spraying it evenly on the evaporative filter layer through a water distribution system. Outdoor hot air enters the evaporative cooling medium. In the evaporative cooling medium, in the evaporative cooling medium, in the evaporative cooling medium humid curtain (honeycomb filter layer of special material), the cooling effect is better. High-tech patented products) fully heat exchange with water, because of water evaporation and heat absorption and cooling of cool, clean air from low-noise fan pressure into the room.Characteristics of household air coolers(1) less investment and greater efficiency.2. Using environmental protection can not close doors and windows.3. It can replace indoor turbid, stuffy, and odorous air outside.(4) the power consumption is small, and the power consumption per hour is 0.5--0.8 degrees, without freon.5. The air volume of each household cooling fan is 1000 to 4000 cubic meters per litre.The cooling area of each Guangdong sharp platinum fan is 20--40 square meters.Cooling main parts (wet curtain) adopt imported parts.
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Knowledge of large water tanks, air conditioning fans and air conditioning fans
2018-08-14
Knowledge of large water tanks, air conditioning fans and air conditioning fansWhat is air conditioning fan?Air conditioning fans, household appliances, air conditioning fans combine the advantages of air conditioning and fans, such as air conditioning is blowing machine wind, and need to be in a closed environment, easy to make people feel uncomfortable. Although fans are natural wind, if the environment is very dirty, the wind will also be dirty. And most air-conditioning fans have dust removal network can filter air, if dust removal network with a layer of photocatalyst can also play a sterilization effect. The air conditioning fan only has 60-80W and fridge when starting refrigeration, so it doesn't cost electricity.Two, the advantages and disadvantages of air conditioning fansAdvantages: lower than the ordinary fan temperature about 5-6 degrees Celsius, low power consumption, moderate price, some products also have warm air and add anion function, small size, easy to move.Disadvantages: For large area refrigeration effect is not very good, there is no dehumidification function, high temperature is not easy to use, the use of air humidity is also increased.Air conditioning fans also have obvious advantages, which is why it can occupy a certain market share. Compared with ordinary fans, it can reduce temperature, low energy consumption, and some products also have the function of warm air, humidification, adding anions, which means that it can be used to cool in summer, warm in winter, dual-purpose, and can humidify the air, its function is obviously superior to ordinary fans.Three, the use of air conditioning fans1) horizontal placementGuangdong sharp platinum collector air conditioning fan should be placed horizontally, pay attention not to tilt when using, check the socket power supply and fan nameplate before using the same parameters.2) often add water.The fresh water must be poured into the air-conditioning fan before use, and the water level can be observed by the water mark to control the amount of water added. The power plug should be unplugged before adding water to prevent damage to the electrical components. The water level to be filled can be raised to near the "highest" position, not too full. In the use of refrigeration, attention should be paid to the situation of the water mark, when the water level drops close to the "lowest" position, that is, should be added water, otherwise the cooling effect will be lost.5b583c40d5bd39.jpg3) frozen ice crystalsGeneral air-conditioning fan franchise products are equipped with two ice crystals, every night, one of the refrigerator in the home refrigeration cabinet for a period of time, the next day out into the water tank, the effect is better.4) proper humidification.If you want to use refrigeration and humidification air supply, you must first add water to the water tank, start working about 1-3 minutes, the air temperature from the ambient temperature to reduce and achieve better results. Adding cold water or ice water to the conditioned area is a better cooling effect. If a certain amount of spice is added to the water, it will bring out a fragrant and cool breeze. In the hot summer, it will make people feel relaxed and comfortable. Press the refrigeration and humidification, the indicator light is on, start the humidification function, if cancel the humidification function and then press this key, the indicator light is off, the humidification function stops.5) swing air supplyGeneral Guangdong sharp platinum collector air conditioning fans have left and right swing air supply function, when the need to swing air supply, only need to press the "wind direction" selection key once, so that the "swing wind" indicator light on, that is, immediately automatic left and right air supply, air supply angle 120 degrees, if it does not need to swing air supply, again press the wind direction selection key, so that the "directional wind" indicator. Stop the swinging directional air supply when the indicator light is on. At the same time, it can also adjust the position of the upper and lower air supply, such as adjusting the direction of the long air guide by hand, so that the direction of the air supply can be all downward or upward, according to your needs to adjust to the desired position.
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What is the principle of water-cooled fans for water cooled fans?
2018-07-24
How about water cooled air conditioning fans?The air conditioning fan is actually an electric fan equipped with water cooling device. It does not have a compressor, does not use Freon, rely on the built-in pump to let water circulate in the machine, and the surrounding air cooling. In this way, the fan blade to send the wind has a cold feeling, the temperature of the outlet is generally lower than room temperature by 3 5 C, the industry known as physical energy storage refrigeration. Air conditioning fan energy consumption is much smaller than air conditioning, the price is only about 500-700 yuan, and it is not easy to cause "air conditioning disease", so it is quite popular with some practical families. But some experts pointed out that the air-conditioning fan is not perfect, if used improperly, may bring some "health risks".Air-conditioning fans refrigerate by water-cooling cycles, coupled with hot and humid summer air, cold air will inevitably cause condensation at outlets and other places, where bacteria are most likely to grow, and bacteria will be blown into the air with the cold wind. Therefore, for health reasons, the elderly and children with poor immunity should use air conditioning fans as little as possible.Of course, if we take into account many factors such as price and energy conservation, air conditioning fans will still occupy a certain market space. As long as we pay attention to dehumidification and cleaning, we can use it to "healthy" summer.1. Use pure water as far as possible when injecting water into the water cooling device. Pure water has high purity and less bacteria, which can reduce bacteria in the process of condensation. The water in the flume should be constantly added to keep it at a safe water level, and it should be replaced regularly.2. After a long period of operation, the air conditioning fan will be blocked by dust and dirt, which will affect the air flow and refrigeration effect of the filter screen and curtain. Therefore, it is best to wash it once every two weeks.Three, when using air conditioning fan, the distance should not be too close, should maintain air circulation and humidity balance. If necessary, consider using some dehumidifiers or dehumidification facilities.Four, in addition, when purchasing air-conditioning fans, we should pay special attention to safety. When choosing cold air conditioning fans, check the sink repeatedly to ensure that the fan is free from leakage. Air conditioning fans that have just been purchased or have been shut down for a long time must be filled with clean water before use. The water level can be observed by a water mark to control the amount of water added. In addition, remember to pull off the power plug before adding water.The principle of water cooled fanEvaporative air-conditioner (water-cooled fan) is a modern high-tech product designed by scientists in Australia, the United States, Sweden and other places for many years. It adopts the highly efficient "direct evaporative" refrigeration technology, the principle is based on the water in the evaporation process to absorb heat, that is, under the condition of constant enthalpy, absorb the sensible heat of the air, so that the humidity of the air (dry bulb temperature) is reduced. The specific process is: when fresh air passes through the core component of evaporative air conditioner, Swedish high-tech patented product CELDEK staggered laminated wet curtain, the temperature on the wet curtain equals the air wet bulb temperature, the circulating water contacts the fresh air directly, generates heat exchange and filters out the dust in the air (the dust filtration efficiency reaches above 80%). The air is cooled by approximating an isoenthalpy change, and the air is eventually cooled to a wet-bulb temperature close to that of the air.In the hot summer environment, the humidity of the dry/wet bulb of the air varies greatly, so the cooling effect is relatively high. Outdoor fresh air is filtered by evaporative air-conditioner and cooled, then it is continuously sent into the room, and the indoor turbid air with odor, dust and higher temperature is discharged out of the room, so that the indoor temperature is reduced and the oxygen content and quality of the air are relatively stable. Therefore, the evaporative air conditioner can achieve the dual effect of cooling and ventilation, and can create a fresh and comfortable living and working environment.
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Can the air conditioner fan be cold for one night?
2018-07-24
Is cool air fan easy to use?The advantage of air-conditioning fans over air-conditioning is that the price is low. Air-conditioning fans are naturally a good choice for people with less economic conditions. For those who have just joined the work force, every penny has to be planned, so it is necessary to buy a good air-conditioning fan in the hot summer. Today, we will show you some attentions about the air-conditioning fan.Matters needing attention in air conditioning fans1, frozen ice crystals.Generally, the Guangdong Ruiping Hui air conditioning fan is equipped with two ice crystals, which can be exchanged for ice crystals to maintain the air conditioning can be used continuously, each night can be frozen in the refrigerator, the other can be used. The effect is better and more convenient.2, add water regularly.The fresh water must be poured into the air-conditioning fan before use, and the water level can be observed by the water mark to control the amount of water added. Before adding water, the power plug should be pulled out to prevent damage to the electrical components. The water level to be filled should be raised to near the "high" position, and should not be too full. When used as refrigeration, we should pay attention to the situation of the water mark. When the water level drops to near the "low" position, we should add water, otherwise we will lose the refrigeration effect.3, horizontal placement.Air-conditioning fan should be placed horizontally, be careful not to tilt when using, check the socket power supply and fan nameplate before using the same parameters.5b583c40d5bd39.jpg4, properly humidified.If you want to use refrigeration and humidification air supply, you must first add water to the water tank, start working about 1-3 minutes, the air temperature from the ambient temperature to reduce and achieve better results. Adding cold water or ice water to the conditioned area is a better cooling effect. If a certain amount of spice is added to the water, it will bring out a fragrant and cool breeze. In the hot summer, it will make people feel relaxed and comfortable. Press the refrigeration and humidification, the indicator light is on, start the humidification function, if cancel the humidification function and then press this key, the indicator light is off, the humidification function stops.5, swing air supply.Guangdong sharp platinum collector air-conditioning fan usually has the function of swing air supply, when the need to swing air supply, just press the "wind direction" button once, "swing wind" indicator light on, immediately automatic left and right air supply, air-conditioning fan supply angle is 120 degrees, when no swing air supply is needed, then press "wind direction" again. After directional light is turned on, the directional air supply is stopped. At the same time, it can also adjust the position of the upper and lower air supply, such as adjusting the direction of the long air guide by hand, so that the direction of the air supply can be all downward or upward, according to your needs to adjust to the desired position.6. MaintenanceIf the fan is no longer in use, it should be emptied out of the water tank, and then air supply at room temperature for a period of time, this is mainly the filter screen part of the drying machine, dried and then covered with plastic bags, sealed collection.Can the air-conditioner fan be cold for one night?The answer is: "yes". The air conditioning fan is actually an ordinary fan with a power of roughly fifty or sixty watts. The electricity consumption should be between one or two degrees per day.
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Do you want to use cool and warm air conditioning fans?
2018-07-24
Is cool and warm air conditioning fan easy to use?Air-conditioning fan is a kind of household appliances between air-conditioning and fan, mainly divided into single-cooled air-conditioning fan and cold-warm air-conditioning fan, single-cooled air-conditioning fan can only refrigerate; and cold-warm air-conditioning fan can not only cool down, but also blow warm air, so the price is relatively expensive, generally about twice the single-cooled air-conditioning fan. Air conditioning fans are helpful to families with special diseases and rooms that are not allowed to operate.Working principle of air conditioning fanCold and warm air conditioning fan is a new concept of the fan, both air supply, refrigeration, heating, purification of air and humidification and other functions in one, with water as the medium, can be sent below the room temperature of cold air, but also can send out warm and humid wind. It uses ice crystals to lower the temperature of water and then to blow out the cool air. It has the functions of humidification, anion, air volume and remote control. Compared with electric fans, air conditioning fans have more fresh air, smell removal function, and power is only about 60-80W, the price is relatively low. For the majority of wage earners and urban residents, the use of cold and warm air conditioning fans can avoid the trouble of meter tripping, but also comfortable feeling.Advantages and disadvantages of air conditioning fansThe cold and warm air conditioning fan has very distinct advantages: the temperature of the cold and warm air conditioning fan is about 5-6 degrees lower than that of the ordinary fan, low power consumption, moderate price, some products also have the function of warm air and adding anions, small size, easy to move. However, the cold and warm air conditioning fan also has its drawbacks: it can not refrigerate itself, it needs to continuously inject the required temperature of water to continue to provide the required temperature of the wind, so it is inconvenient to use. For large area refrigeration effect is not very good, there is no dehumidification function, high temperature is not easy to use, the use of air humidity is also increased. It can not match the cooling effect and refrigeration speed of air-conditioning. The noise is too large to be used in hospitals, old and young rooms, etc.Why hot and cold air conditioning fans sell wellCold and warm air-conditioning fan refrigeration through physical energy storage, this refrigeration is very limited, at best than the ambient temperature is 3-5 degrees lower than the cooling capacity of air-conditioning is simply incomparable, but cold and warm air-conditioning fan is still very popular? In fact, this is mainly due to the high affinity price of the cold and warm air conditioning fan compared with the air conditioning, and the superiority of the performance of the fan, especially for the elderly and patients who can not stand the cold air conditioning, the room temperature of the cold and warm air conditioning fan is just right.In addition, power saving and energy saving is one of the strong advantages of the cold and warm air conditioning fan. At the same time, the new anion generating function, humidifying function, and ice grid additional refrigeration function of the cold and warm air conditioning fan have also increased a lot of competitiveness for the hot sale of the cold and warm air conditioning fan.
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How to maintain air cleaner's maintenance skills by air purifier
2025-06-08
Nowadays, the haze is getting heavier and heavier. With the increase of air pollution concentration, more and more users begin to choose to put an air purifier at home to protect the health of their families. Air purifier belongs to small electrical appliances, it is also relatively simple to use, so many people think it only needs to switch on and off, do not need any maintenance.In fact, the maintenance of air purifier can ensure its longer life and enhance its purification effect. So how can air purifiers be used? Air purifier is a kind of product which can replace polluted air with fresh air and improve air cleanliness effectively. According to the different working modes, the air purifier can be divided into passive, active, active and passive mixing; according to the different pollutant removal technology, the air purifier can also be divided into mechanical filter, electrostatic electret filter, high-voltage electrostatic dust collection, anion and plasma air purifier. It can be said that there are so many kinds of air purifiers, so many technologies, can meet different levels of pollution of air purification.Air purifiers want to maximize efficiency, then the first place to place, remember not to place by the wall or home, it is best to be more than 1 meter away from the wall.Some people think that the longer the air purifier is turned on, the better the purifying effect. In fact, this is a wrong concept. Generally speaking, when the air quality is good, there is no need to turn on the air purifier, or when people are no longer in the room, the air purifying can be turned off. This is the device.Close the windows when the air pollution is serious again. When the air pollution is serious, close the doors and windows to form a closed environment in the room. This can make the air purifier more effective.Humidified air purifier use: Some users use air purifier with humidification function, it is necessary to pay attention to humidified air purifier can not be used in rainy season and humid places, otherwise it will reduce the purifying effect of air purifier.Air purifier should be replaced after a period of time, the replacement time should be determined according to the local environmental pollution and use. Regular replacement of filter screen can improve the performance of air purifier, and make it purify more thoroughly, and the effect is better.
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