As a technology-based enterprise specialized in manufacturing and processing of metal castings, Wenzhou Wanlong/Wanhong Valve Co. Ltd covers an area of 8,000 square meters with annual production capacity of more than 3,000 tons and has engineering technical personnel with college degree and average 10 years’ professional experience in casting production. The company plays a leading role in the industry both theoretically and in practice by training and introducing professionals and technicians. The company is certified with the ISO9001-2008 Quality Management System, EU PED97/23/EC and TS Certification. The company mainly produces a variety of precision castings made from stainless steel, duplex steel and alloy steel.

Founded in 1985 as Ohhai Leyi Casting Company and renamed Wenzhou Wanhong Valve Casting Co., LTD in 2001, Wenzhou Wanhong Valve Co. LTD invested in Binhai Industry of Longwan District, Wenzhou in 2009 to cater for market and development. Wenzhou Wanlong /Wanhong Valve Casting Co. Ltd mainly manufactures stainless steel fittings for railing systems by casting and machining. By means of silica sol investment casting and water glass composite casting in the production process, it mainly produces a great many kinds of casting products by precise, delicate, specific and complex processing. With advanced management mode and leading casting technology, precision casting products require less processing or even no processing. Unique technology prevents products from pores, slag, shrinkage and other inherent defects. The products are characterized by uniform, compact and organized processing, so most of them can meet or exceed the nation's quality control standards.

Through 20 years’ efforts and development, the company fully implements Mode of SO9001:2008 Quality Management System, shapes unique product features, pursues modern enterprise management concepts, and optimizes enterprise development environment. With mature production technology and abundant t