The ZJ series air purifier is an air purification unit that provides a locally clean working environment. Composed of primary air filtration, fan, high-efficiency air filter, and static pressure box. The outer shell is treated with steel plate spray molding, and the box is covered with sponge. The whole machine has low noise, simple structure, and is easy to use. It can be installed for outdoor air self circulation. Air purifier is a simple indoor purification air supply equipment.