1.TianjinZhengyuInternationalTrade Co., Ltd is ahighly technical & comprehensive enterprisespecializing in research, development, casting, machining andinternational sales. 2. Our Foundry has 2 production lines , 2electric furnace (2 tons, 5 tons),Crane (5 TM and 5MT).,Clean room,Independent testing laboratory for raw materials, Furnace andfinish inspection.3. CNC lathes for mouldmaking.4. The Production capacity is 90,000 tons peryear.5.Zhengyuis certified byISO90001-2008.