Established in 1986-1992:
In 1986, three houses (without factory name) were used for foundry. The nature of the foundry is individual business households.
Established Zhengzhuang Foundry in Longkou City in 1988
In 1990, the company was renamed "Longkou Zhengzhuang Foundry Co., Ltd."
Renamed "Longkou Zhengzhuang Foundry" in 1992
II Growth Phase 1993-2002
The output value of interest and tax in 1993 quadrupled that in 1992.
In 1998, Xufu Town was selected as the Top Ten Private Enterprises
In 1999, Yantai Industrial and Commercial Bureau rated it as a "contract-oriented and trustworthy enterprise"
Enterprises passed ISO9002 International Quality System Certification in September 2000
In July 2002, Longkou Kim Jong Machinery Co., Ltd. was established with "Kim Shan Precision Manufacturing Industry Co., Ltd. of Korea" and recognized as the enterprise logo by "JZ" in English.
The Rapid Development Phase from 2003 to 2007
In 2003, the original business model was maintained, and the export business of brake discs and drum hubs was increased.
In 2004, it won the U.S. anti-dumping lawsuit and finally won the zero export tax rate victory.
Passed TS16949-2002 International Quality System Certification in 2005
Restaurant management in staff canteens in 2006
In 2007, the dormitory building with accommodation capacity of 1500 people was completed, and the dormitory was managed by apartment.
IV Strategic Reorganization Phase 2008-2010
Annual output value reached a record high of 300 million yuan in 2008
In February 2009, the product was successfully registered as a trademark.
In 2010, the output value reached an all-time high of 450 million yuan.