Yantai Tri-Circle International Trade Co., Ltd. is one of subsidiaries of Yantai Tri-circle Lock Industry Group Co., Ltd., which handles all exporting business and part of domestic business for Tri-circle brand products.Tri-circle Lock Factory established in 1930, is the oldest lock manufacturer in China.The main products are more than 100 specifications of over 10 types, including Tri-circle brand padlocks, bicycle locks, chain locks, wire locks, combination locks, all kinds of door locks, automotive locks, safes, mangnetic card locks, smarts card locks, anti-theft system for apartment, anti-theft doors, etc. "Tri-circle" trade mark was registered in 1952.Tri-circle brand locks have won the only highest quality award - Gold Award in the national lock and honored as "King of Lock" by customers for superior quality and credit.