Zhoushan Jingai Alloy Precision Casting Co.,Ltd is famous China Rubber plunger rod Screw Barrels Manufacturers and Rubber plunger rod Screw Barrels factory. In the incentive market competition, the essence of resistance by the good faith, service, in the superior quality, and the real price under the premise of the company's technical staff is also time for customers to solve various questions and problems.Over the years,the main products are Nitriding screw and barrel,bimetallic alloy screw and barrel,stainless steel screw and barrel, fully hardened screw, wholeslae Rubber plunger rod Screw Barrels which will be used at extruder and injection molding machine rubber plunger rod