The factory integrates R&D and production, and has many senior technicians and design professionals, which can meet the needs of different customers.The mechanical keypad combination lock has superior waterproof, fireproof function, high security, and it can be used under high temperature and low cold. It has a long working life and stable and reliable quality, which is mainly used in outdoor doors, courtyard doors, shopping malls, hospitals, restaurants and other places.The locks are fully mechanical structure, complete variety, no electronic products, easy to disassemble and install, and simple operation.