Shijiazhuang Tongjia Stainless Steel Products Co., Ltd. was founded in 1998. we are specialized in manufactures and export stainless steel products, including valve parts, pipe fittings, couplings, pump parts, flanges and various OEM parts. We are able to make the products according to your drawings. We have one precision casting factory and one machining factory. Our casting technics adopts investment casting of silicasol lost-wax. Its material inspecting equipment is ARL-2460 spectrometer made in Switzerland. The machines are numerical-control equipments.