SIAN (FUHUA VALVE) was founded in 1992 and is located in Yuyao, Zhejiang. The company covers an area of over 40,000 square meters and has 320 employees. It specializes in the manufacturing of specialty valves, fire extinguishers, and industrial gas cylinder valves, with an annual output of 12 million sets. It has passed ISO9001 and ISO14001 certifications, as well as CCS, CE, TPED, EN3, and other approvals. The company holds more than 30 independent intellectual property rights and a special equipment manufacturing license. Its main products include fire valves, industrial gas cylinder valves, self-closing valves, handwheel valves, medical oxygen valves, refrigeration valves, and fire engineering valves.