Air filter cotton is a kind of filtering medium. The air filter cotton can filter and purify the pollutant gas, dust particles and exhaust gas contained in the air. So how to choose and replace the air filter cotton?　　 1. Grasp the main influencing factors for selection, such as high temperature gas

(1) The overall situation of the air purifier market In 2015, the overall growth rate of China's air purifier market slowed down. This means that competition will become more intense, thereby accelerating the industry reshuffle. Compared with 2014, when both retail sales and retail sales g