Min. Order Reference FOB Price
1 Set US$1,000.00-8,000.00 / Set
Product Description
Rui'an Yumin machine screw co, ltd is professionally makeing screw barrel, filter, mould, gearbox and gearbox. We have 20years history working in the field. Our screw is based on 38CrMoAlA, through 7days nitriding process. The hardness can reach HV950-1100. All process is done by ourselves. 1. ...