Yantai tricyclic Lock Industry Group Limited was founded in 1930, is the birthplace of China's modern manufacturing locks.

Companies registered capital of one hundred million yuan, covers an area of 340,800 square meters, construction area of 151,300 square meters, more than 3,000 employees, including 289 engineers and technicians. The company has 10 subsidiaries and one branch, a multinational joint venture company and a state-level enterprise technical centers. Is the China National Hardware Association branch chairman lock unit, China Development Center locks, high-tech enterprises in Shandong Province, Yantai City Charity founding and permanent member, "ring" is the old Chinese.

Companies adhering to the "professionalism, dedication, innovation, rule the roost," the spirit of enterprise, innovation and technology center subject to multi-mode research cooperation for technical support, strengthen original innovation, integrated innovation and the introduction of absorption and innovation. Modern security access control industry is committed to the development of cutting-edge technology, and constantly improve the traditional system of locks with electronic information industry, computers, and other high-tech biometric technology grafting, the progressive realization of the company's products structure adjustment and transformation of the mode of operation.

The company's main business consists of a single lock industry, the development of a number of industry auto parts production, non-ferrous metal processing, electroplating, printing and other markets are also expanding from civilian hardware to security,commercial security, home safety, and other markets.

Tricyclic products since 1957 to enter the international market, selling more than 180 countries and regions in the world, is the China National Hardware export of "high-quality products."