1.The equipment is with accurate controlling process and high level mechanic designing, which is simple to operate and runs stably. 2.Equipped with water cooling rasp and automatic blades renew device. The blades can be used with 80% more working endurance. 3.The buffing quality can be proved more stable in accordance of the working of automatic belt measuring device. 4.Casing drove by expandable rim, in order to ensure dynamic performance of the retread tires