Jiangshan Risen Machine Co., Ltd., located in Jiangshan Economic Development Zone in Zhejiang Province, is a professional company specialized in the R&D, manufacture and distribution of products. With an advanced management system, high-quality machines, special processing, inspection & testing equipment, and refined technologies, we perform production according to many international standards such as GB, JB, API/ANSI, JIS, DIN and BS. Risen has developed brass valves and fittings of over ...