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Over <a href="https://www.cn-screwbarrel.net/">JINGAI ALLOY PRECISION CASTING CO.,LTD</a> the years,the main products are Nitriding screw and barrel,bimetallic alloy screw and barrel,stainless steel screw and barrel, fully hardened screw, wholeslae Extruder screw barrel which will be used at extruder and injection molding machine. if you need, we are willing to take the good faith attitude, the cheaper price, high quality common development with you,Cost reduction, quality assurance, reputation, timely delivery, this is our company's business objectives, welcome!