Steel Bolts, 1.ISO9001 Supplier 2.Making all kinds of steel,plastic product and so on 3.Mould Making 4.Quality assurance Steel Q235+ ABC plastic ShengzhouCity Xinhui Machinery Co.,Ltd ,which is located in Shengzhou City, Zhejiang Province, close to 104 National Road, Near the Highway, Yong-Jin Expressway, traffic is very convenient. Company mostly produces and manages hardware, plastic and mold, ...