Haojian Metal Products co.,Ltd  Zhongshan City, founded in 2005, the company is located in Xiaolan Town, Zhongshan City, the industrial city of hardware. Is a professional production of a variety of copper lock and hardware of private businesses, products, sophisticated technology.  Lock core products are divided into: double tooth cylinder, double cylinder computer, ray-type double marble lock cylinder, lock cylinder beads in the bead, double snake-groove lock cylinder, and the production of various management Cylinder: two Level management locks, three-level management of locks, four locks and multi-functional organizations, lock management, in addition to the above products can also be outside the other specifications according to customer requirements in the lock.