Here are 200 employees and 30 technical staff working on the production line of the precision casting. The annual productivity reaches over 2000tons,Website:http://www.hh-casting.com, including 30 million blank pieces of ductile iron piston ring. The company has advanced production lines, such as Sand Casting Production line, Silica Precision Casting, Sheet Metal Processing, and advanced physical and chemical detection equipments. We use new equipments and technics to produce various kinds of castings, for example, stainless steel, carbon steel, wear-resistant and heat-resistant cases, Ductile Iron Castings, Alloy Ductile Iron Castings. The company has passed the ISO 9001-2000 Quality System Certification. We also established the computer network management system.