All kinds of clothing factories、leather industries、shoes-making factories;

All kinds of textile factories: Such as weaving factories、garment workshop、silk factories、socks factories、knitwear Factories、 Cotton Spinning factories、woollen textile factories、 flax textile factories、 chemical fiber factories 、warp knitting factories etc.；

High temperature and workshop with polluted： Such as heat treatment factory、casting factory 、Plastic-injection workshop、aluminum alloy factories、Electroplate Factory 、ctroplating factories、 chemical factory etc.;

Ironware factories which need to lower temperature：such as assembly workshop;
Places where have installed conventional air conditioners but insufficient supplies of fresh air or level of oxygen.

Waiting room、 supermarkets、 restaurants and other public places;

lower the temperature in the hothouse, in the farm.