(1) 1945-1985: Shandong Jinqilin Co., Ltd. has a long history. It was formerly known as Leling Machinery Factory. It was founded in 1945 and was originally named Leling Zhenye Iron Factory. In the late World War II, the military industrial enterprises in the Bohai District of the Eighth Route Army mainly produced grenades, landmines and firearms. After liberation, it was transformed into a local enterprise, producing hardware tools (carp pliers), flour mills (roller mills), water pumps, tractors and other agricultural machinery products. In 1958, the hardware tool workshop of Leling Machinery Factory moved to Dezhou to establish Dezhou Tool Factory. Leling Machinery Factory was once the local state-owned enterprise with the longest history and the strongest technical strength in local history. In the early days of reform and opening up in 1980, during the transition from a planned economy to a market economy, the enterprise suffered a serious recession and crisis. By 1985, the enterprise was in a semi-stop production and insolvent state, with total assets of 60,000 yuan and liabilities of 350,000 yuan. Ten thousand yuan. 350 regular employees and 150 retired employees are no longer able to receive their wages normally. In October 1985, Mr. Sun Zhongyi, the current chairman of Jinqilin Co., Ltd., was transferred to Leling Machinery Factory as factory director and party branch secretary.

(2) 1985-1999: The initial stage of enterprise development. After Mr. Sun Zhongyi took a job in the machinery factory, he carried out drastic reforms in the internal management mechanism of the enterprise, established a management mechanism to adapt to market demand, and realized product development. Structural transformation, from agricultural machinery products to civilian machinery products, has successively produced solar water heaters, aluminum alloy doors and windows, packaging machinery, lifting machinery and other products. In 1991, he entered the brake pad industry and established a joint venture with a Hong Kong company - Leling Jinqi Brake Pad Co., Ltd., which was the first in China to introduce complete sets of equipment and technology from Canada, and its product quality has reached the international advanced level. The contract of the joint venture company stipulates that "the products will be underwritten by the Hong Kong party... The Hong Kong party shall not transfer similar equipment and technology to Chinese third parties." Due to the foreign party of the joint venture company violating this agreement, the Hong Kong party has provided 8 Chinese companies with Similar equipment and specialized technology were obtained, causing core technology leaks, and Hong Kong had no marketing capabilities at all. The company was once in trouble. Under this circumstance, Sun Zhongyi led the company's employees to overcome many difficulties, go abroad and independently develop international markets, and independently develop new materials, new formulas and tooling molds. In 1994, brake pad products entered the US and European markets in batches, and the company showed vitality. In 1999, according to the state-owned enterprise restructuring policy, all state-owned assets of Leling Machinery Factory were liquidated and withdrawn. Mr. Sun Zhongyi initiated the raising of 5 million yuan in equity capital to establish a private enterprise - Leling Jinqilin Auto Parts Co., Ltd. In 2001, it was renamed Shandong Jinqilin Group Co., Ltd.

(3) 2001-2012: The rapid development stage of the enterprise. After the establishment of Shandong Jinqilin Co., Ltd., the enterprise entered the track of rapid development. For ten consecutive years, the enterprise's production and sales growth rate increased by more than 30%, and the brakes were The annual production and sales of tablets have increased from 500,000 sets to 30 million sets. The products are exported to more than 70 countries around the world, with a global market share of 10% for similar products and a domestic market share of more than 30%. It has become the largest leading company in China's automotive brake pad industry, ranking among the top five in the industry globally and first in China. The company's R&D capabilities and technical level have reached the domestic leading level and the internationally advanced level. In 2005, the company's trademark "LPB" was rated as a well-known trademark in China. In 2006, the Enterprise Technology Center was recognized as a "National High-tech Enterprise" by the Ministry of Science and Technology. In 2007, the Enterprise Technology Center was recognized as a “National Enterprise Technology Center” by the National Development and Reform Commission.