grinding process for our investment casting factory Ningbo City Yinzhou Ruican Machinery Co, Ltd is located in Ningbo city, one of the famous  and the second biggest container port in China with convenient transportations for air, ocean and express, which established 2003. Ningbo City Yinzhou Ruican Machinery Co, Ltd is direct manufacturer, covers the sand casting Foundry, Investment Casting Foundry and Machining Workshop, and offer th Ductile Iron Grey Iron Sand casting parts, investment casting parts, Aluminium casting and precision machining parts. The produced parts are widely used in Auto parts: Agricultural, Marine; Architectural,Machinery, Medical; Food Machinery, Valves and so on. The material which we used Aluminium; Bronze; Brass; Copper; carbon steel; stainless steel and so on. At the same time, we can offer the CNC machining; Phosphating; Blackening Processing; Hot Dip Galvanizing: Powder Coating: Painting: Plating, Assembly for customers. 85% products are sold to overseas, the customers are from America, Canada, Europe Union, ect. i 15% products are sold in National Market. There are about 200 employees in our company now and around 10 technicians from medium to senior. We have the manufacturers and tester equipments, such as medium frequency furnaces; shot blaster; hardness tester; Spectrum Analysis tester; Metallurgical analysis tester, CMM; crack detection; surface roughness tester ISO9001: 2015 and TS16949 systerm to be sure the quality.