SHENGYE METAL MANUFACTORY is a manufacturer of Over-head Transom closers, floor spring, door closer and patch fitting, which was established in 1990. We are accredited with ISO9001-2000 and compliance with China Technical standards and National Light Industrials Bureau QB/T2697-2005, our products are subject to 500,000 cycle testde and distributed worldwide and 20 local distributors in China. Within the last 10 years we have established ourselves a leader in manufacturer of DOOE-Controls in China. We provide high quality products,technical back-up and after sales service to our Distributors/Agenrs.