Zhoushan Jinteng Machinery Manufacture Co.,Ltd through more than twenty years development,has already become the biggest specialized in manufacturing the screws and cylinders of plastics machine manufacturer. The product through the craft fine manufcture such as quenching and tempering, qualitative, the nitriding, fine or spurts the brazing metal(bimetal), polishing and so on. We refers to ISO9001 international quality control system strictly, so enables the product to achieve the international level standard.