Air purifier devices are used in removing the contaminants from the air either in closed rooms or in open areas depending on the range and extent of diffusion of the purifiers. The commercially graded air purifiers are usually manufactured as two categories as small stand-alone units or larger units. They are usually been widely used in the medical, industrial, and commercial industries. Due to its unique qualities such as removing pet dander, dust, pollen, mold spores and dust mite feces, volat 更多
