Longzhu company is located in Wenzhou Industrial Zone of China,   Founded in 1986, Longzhu has gone through thirty years of winds and rains and   developed into one of Wenzhou’s largest professional casting enterprises   integrating the R&D, casting, machining and marketing of valve castings   and machine parts.

Major products of Longzhu are valve castings and supporting   mechanical castings. Annually, Longzhu can produce more than 4,000 tons of   steel castings and over 1,000 tons of iron castings. Steel types Longzhu uses   contain carbon steel, middle-low alloy steel, duplex stainless steel ASTM   A995 4A/5A/6A, ASTM A351 CK3MCuN and ultralow temperature steel types with   special uses; while cast irons cover alloy cast iron, high-chromium iron,   etc.

Quality lies in professionalism and reliability depends on   technology. Longzhu not only has world-class resin sand founding production   lines, digital controlled lathes, machining centers and other advanced   processing devices, but also boasts perfect process facilities, standardized   manufacturing and division of labor based on specialization; and has formed a   complete production and manufacturing process. Furthermore, Longzhu has   invested a huge sum in technical transformation and has set up a special new   product R&D center.

All the time, Longzhu adheres to a quality policy of “Treating   People with Sincerity, Seeking for Prosperity with Quality” and a principle   of “Reputation First, Quality First”, sets up an industry-leading modern   quality inspection and test center, and tests outgoing products strictly with   direct-reading spectrometer, fluorescent magnetic particle inspection,   all-digital ultrasonic fault detectors, screen display hydraulic pressure   universal testers, radiographic testing machine, coordinate Measuring   Machine, molten steel thermocouple thermometer and other inspection devices.   So far, Longzhu has obtained the CE certification of the EU and the ISO9001   Quality Management System certification relying on its reliable product   quality.

Over the years, Longzhu has always taken continuous improvement   and final customer satisfaction as its tenet, firmly established a rapid and   considerate service concept, always adhered to being market-and   customer-oriented, provided sound after-sales service according to customers’   requirements and enhanced customer value maximally. Currently, Longzhu has a   broad overseas market, while 80% of its products are exported to the USA,   Germany, Canada, Britain, Japan, Switzerland, India and other countries and   regions and are highly praised by customers for quality.