Guanli hardware factory was established in 1991, is a professional production of hardware door control series manufacturers, the factory adheres to the "quality-oriented, customer first" business philosophy, aimed at creating a new era of door control series. The factory has strong technical force, rich experience, and constantly introduce sophisticated equipment such as internal and external circular grinding machine, computer copying milling machine, different tonnage punch and oil press, is a set of production and scientific research as one of the new technology experimental factory; In production technology, hire professional technicians to guide production.