1. Dump PVC etc. Materials 2. Measurement and feeding of materials Main material is fed into three electronic balance and then mixer by rotary valve below store hourse. 3. Putting auxiliary materials 4. Heating mixing and cooling mixing In the heating mixing, at the same time water is drained by compulsion absorption device; when materials reach the set temperature, discharging valve will open automatically and material enter cooling mixing. When material comes to set temperature of cooling, cold discharging valve will open automatically and materials move into a storehourse. 5. Dust catch