DIANJIAN.Established in 2002, DIANJIAN is a professional valve manufacturer headquartered in Lishui, Zhejiang Province, with registered capital of 108 million yuan. The company operates a 58,000-square-meter production base equipped with over 200 sets of precision machining and testing equipment, achieving an annual production capacity of 40,000 tons. It maintains a complete industrial chain spanning R&D design to sales and service. Its extensive product portfolio encompasses over 30 types and thousands of models, including butterfly valves, ball valves, and gate valves. Strictly adhering to multiple international and domestic standards, these valves meet extreme operating conditions ranging from -196°C to 800°C. Equipped with advanced physical and chemical testing laboratories, non-destructive testing facilities, and a pressure testing center, the company ensures high product quality and reliability. DIANJIAN valves are widely utilized in critical industries such as petrochemicals, power generation, and metallurgy.