... production are: "gradient type, mutant, PM separation type, shunt type, barrier type, the vacuum exhaust type, combined type, work type, speed ... all kinds of rubber raw materials, such as: PE, PP, PVC, PS, ABS, PA, POM, PC, PSV, PTFE, PR, UP, ... quality alloy steelTechnology: nitriding treatment, alloy coating spraying, heat-treatmentAppliance: PVC, PP, PE, PA, PC, ABS, AS etcDepth of Nitrated Layer ...