CT-C series hot air circulation drying oven uses alow noise and high temperature proof axial flower and an automatic temperature control system. The whole circulation system is the fully enclosed to make that the heat efficiency of the dryinbg oven increases from 3-7% of the traditional drying oven to 35-45% of the present one. The highest heat efficiency can reach 50%. The successful design of CT-C hot air circulation drying oven makes that the hot air circulation drying oven in our country catch the advanced level both at home and abroad. In order to save a large quantity of the energy in our county. In order to enhance the economic results of other enterprises. In 1990. The medicine management bureau of the State issued the industry standard and the uniform type is RXH.