Hot air ovens (also called industrial hot air oven from china are used for product's drying, curing and high temperature aging test. The hot air drying oven is mainly applied in chemical, electronic communication, plastics, cable, electroplating, hardware, automotive, photoelectron, rubber products, molds, painting, printing, medical, aerospace, military research and other filed. The temperature can be run at a temperature from 40 degrees celsius to 500 celsius degree, normally less 200 degrees celsius or 300 degrees celsius can meet 80% of manufacturer customers.