About Us Linyi Hongsheng Foundry Company (it grew out of Linyi Hongsheng Malleable Iron Company) was established in 1995 , with registered capital of 8million RMB and total investment of 20 million RMB. The company located in Linyi, a well-known goods distribution center. Linyi Hongsheng Foundry Company owns advanced manufacturing, inspection equipments and high leveled processing technique. We specialize in researching, developing and manufacturing cast iron connections & couplings and mechanical accessories. In addition, we take the lead in passing ISO 9001: 2000 among the same industry.