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Humidifier 101: what & how
Generally, how many kinds of humidifiers there are? There are many humidifiers on the market, and most of them can be categorized into two: ultrasonic humidifier, and evaporative humidifier. How does humidifier work, actually? Ultrasonic humidifier: this type of humidifier generates high-frequency vibration to diaphragm(or other type of vibrating elements), vaporizing the water into mist to achieve humidification. At 1.7MHz,...
5 tips to survice the pollen season
What is pollen? Pollen is the sperm cell of plants. It is one of the most common seasonal allergens thanks to the protein elements inside that cause allergies so easily. The size of pollen is usually invisible between 20-50 μm, but large quantity of falling pollen will form pollen dust that looks like smog. How to know you are pollen...