1. The conveyor with belt, PVC or flat tape, adopts bunched which it adjust speed at will. 2. The closed heating rubber machine with stainless iron branch, endures rot. The heating system is closed; the capability of heat. preservation is good, the power could be saved; (The drying tunnel is provided with two heating modes such as near infrared and electric heating.) 3. Unique air exhaust device which completes exhausting the steam and vapor form the heating oven, to avoid the emission pollution for the working environment. It could be made a safe Environment.