Zhejiang Zhongzheng Lock Industry Co., Ltd was established in the early 1980s. Our products are exported to Europe, America, the Middle East and Southeast Asia. The company has passed ISO9001 international quality system certification; ISO14001: 2004 environmental management system certification; GB /T28001-2001 occupational health and safety management system certification. ZONZEN now is the national high-tech enterprise, leading the industry! We will help you with whatever you need!