Tri-Circle---Since 1930 Yantai Tri-Circle Lock Industry Group Co.,Ltd. Established in 1930, is the oldest and biggest lock manufacturer in China. With more than 80 years of tradition behind it, Tri-Circle has developed in revenue terms into the world market leader in padlocks, door locks, bicycle locks, chain locks, wire locks, combination locks, fingerprint locks, lock body, automotive locks, anti-theft doors, magnetic card locks, etc.. Tri-Circle is also a successful player in the security, time management and access control segments. The annual output reaches 200million pieces/sets, with annual sales volume of RMB1500 million and earning foreign exchange USD40million. Yantai Tri-circle Hardware Co.,Ltd. Is one of subsidiaries of Yantai Tri-circle Lock Industry Group Co., Ltd., which handles all exporting business for tri-circle door locks, cable locks, lock parts etc..