Wenzhou constant force spring manufacturing co., LTD. Is a professional production of all kinds of spring modern enterprises, founded in 1984, now has a workshop of 21000 square meters. The company has been committed to the development and research of high quality spring products, production specifications ranging from 0.1 to 50 mm in diameter.  With domestic and foreign advanced production technology and equipment, to ensure the quality of products to lay a solid foundation.  In 2003 has passed the ISO9001 international quality certification, in 2011 through the ISO/TS 16949:2009 certification.