1. Three-ring locks

"Three-ring" brand is the flagship brand of Yantai Three-ring Lock Industry Group Co., Ltd., which was founded in 193. The company mainly produces "Three-ring" brand civil locks and commercial locks. The company has passed the ISO91:2 quality system certification, and the "Sanhuan" trademark won the "well-known trademark" in China.

2. Neutral Locks

Neutral is a brand of Zhejiang Neutral Group Co., Ltd., which was founded in 1987. At present, it has become a private scientific and technological enterprise integrating the design, research and development, manufacturing, sales and technical consulting services of bicycle locks, motorcycle locks, car locks and furniture locks.

3. General Locks

"General TONYON" is the flagship brand of Wenzhou General Locks Co., Ltd., which was founded in 1991. The company has been committed to the research and development and production of traffic locks, door locks and building hardware such as bicycle locks, motorcycle locks and car locks, with nearly 1, varieties of products in more than 3 series.

4. Huafeng Locks

Huafeng Locks is the abbreviation of Zhongshan Huafeng Locks Co., Ltd. Huafeng Locks was established in 1996. It is a professional lockset manufacturer, mainly producing all kinds of spherical locks, hand locks, mortise locks, zinc alloy die-casting locks and building hardware. Through continuous efforts, Huafeng Company has won remarkable honor and won the title of "Guangdong Quality Product" in 1999.

5. Guli Locks

Guli Security Products Co., Ltd. is a brand of Guli Security Products Co., Ltd., which was established in 1992. The company mainly produces and operates "Guli–Guli" brand civil door control products, and "Vega line-–Weijia" American standard and "Rügen line-–Ruige" European standard two series of advanced commercial door control products.