DingGu hardware Factory is a modern enterprise which specializes in designing, producing and processing a series of high_grade door control such as floor spring, door closer, door clip, etc. The main technical indexes of products have reached and exceeded the level of the same kind of products abroad. We have established our sale and service network in the large cities across the country. We offer the products and services to many hotels, high_class office and residential buildings as well as have gained favorable comments from the clients.