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 advanced management system, high-quality machine, special processing, inspection & testing equipment, and refine technology, 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 60 series and nearly one thousand product types such as pipe fittings, ball valves, gate valves, stop...