Dongying Haihe Machinery Co., Ltd located in Dongying Shandong China is a professional manufacturer of investment castings. We mainly produce stainless steel castings, carbon steel casting and alloy casting. Please click here to see the component of the metal. And both of sodium silicate and silica sol process had been adopted.We also have great machining ability and can provide machining service of mirror polishing, electronic polishing. Above all, we have many advanced CNC machining centers, CNC turning centers, CNC milling machines and CNC machining lathes. Features of our company: 1. A professional manufacturer and exporter of precision castings in China . 2. Products: Impellers, pump body, valve, filter fittings, marine hardware and pipe fittings etc. 3. Material: stainless steel, alloy steel, carbon steel. 4. The annual production is 1500 tons which will certify that we can deliver the goods in time. 5. Many advanced equipments: Such as Spectrometer imported from German for chemical composition analysis and three-dimensional test machine imported from Swiss for dimension inspection. Besides, there are numerous advanced equipments in the precision machining workshop. Relying on our own factory, you must have the highest quality product. 6. Establishing in 1988, we have more than 17 years manufacture experience, a group of skilled workers, veteran engineers. So we can supply you with the strongest technical service. 7. Major clients overseas: USA , Canada , Holland , Sweden , Italy and New Zealand etc. 8. ISO certification: Our company has got the certification of ISO9001, We are also a member of China Foundry Association.