Hangzhou LONGMA Special Steel Co. , Ltd. , One of leading China spring steel suppliers, Was founded in 2004. We specialize in various kinds of spring steel (China spring steel), Spring steel wire, Round and flat spring steel, Tempered spring steel, Cold rolled annealed spring steel, Blue tempered spring steel, Stainless spring steel, Spring steel sheet, With materials of 60Si2Mn etc. Hangzhou KAIXI Mould Factory is engaged in mould steel and mould base products, Including standard mould base (side gate/ Pin point gate) and custom made mould bases, With an annual turnover of more than 5 million US dollars.


As one of the leading mould base suppliers in China mould base industry, We also provide high quality mould components such as guide pin and guide bush, High precision mould inserts etc. China mould making service, Tool steel, Steel annealing, Spring steel heat treatment services are available as we are quipped with high precision machines sets, Milling machine, CNC machining ...[More]ters, Plano grinding machine etc.