Haiyan hengxinyu mould co., ltd. is a pilot company specializing in developing screw punches and punching fasteners.The company mainly produces the daily standard jis, the american standard ansi, the german standard din, the national standard gb, the iso commonly used international standard specifications and various types of special-shaped specifications: h, triangle, quadrangle, six corner, plum blossom and so on, and can be designed and made according to the requirements, to solve the technical problems for the customers to meet the special demand of the market.