Dongying Haihe Machinery Co., Ltd，ISO9001:2000 Certificated, has been a professional manufacturer of investment castings since 1988. Now it has expand to more than 260 staff, including 5 senior engineers and over 10 senior technicians. In haihe , there are two process -------sodium silicate investment casting and silicasol investment casting. Most of the products are stainless steel castings, carbon steel castings, alloy steel castings as well as the aluminium and bronze castings. The product include flanges, valve parts, pump parts, marine hardware, construction hardware, auto and motor parts and other parts for equipment.