Shandong Yanzi Precision Machinery Co., Ltd. was founded in 1994, located in Qihe County Shandong Province. The company has a total floor area of 99,000 m2, 360 employees and 35 technicians. Annual production capacity for investment castings is about 1,500 tonnes and 8,000 tonnes for sand castings. We have investment casting process, sand casting process, lost foam casting process and machining process. The materials include stainless steel, carbon steel, heat-resistant steel, alloy steel, ...