Established in 2014 in Wenzhou, Zhejiang, LONGSHENG operates with a registered capital of RMB 10.88 million and specializes in the customization of valves, cocks, sanitary valves, sight glasses, and pipe fittings, with an annual production capacity of 100,000 sets of sight glasses. Products are exported to Europe, America, Southeast Asia, and the Middle East. Equipped with CNC machining and precision inspection systems, the company employs CAD design and manufactures in compliance with ISO, DIN, and IDF standards. LONGSHENG holds ISO9001, CE, TS, and RoHS certifications. While focusing on hygienic applications in pharmaceuticals, food & beverage, dairy, and biotechnology, the company also serves the chemical, water treatment, power generation, and metallurgy sectors. Core offerings include valves, plug cocks, sanitary valves, and piping systems.