1992 KOSUN was established by Mr. Geng Zhonghou.

1992 KOSUN ZZS-D Series Linear Shaker came into the market.

1993 KOSUN CNQ100 Desilter and LCS Desander came into the market.

1994 KOSUN SB series Sand Pump came into the market.

1995 KOSUN JQB Series Shear Pump came into the market.

1997 The first generation of KOSUN ZCQ Degasser was successfully developed.

1998 The first generation of KOSUN QZS Series High-frequency Linear Shaker was successfully developed.

1998 The first generation of KOSUN LW450x842 Decanter Centrifuge was successfully developed.

2000 The first generation of KOSUN LW450x1000 and LW600x1000 Decanter Centrifuges were successfully developed.

2001 The second generation of KOSUN ZCQ Series Vacuum Degasser was successfully developed.

2003 The second generation of high-frequency linear shaker and decanter centrifuge came into the market.

2004 Mr. Geng Feng succeeded Mr. Geng Zhonghou as general manager of Xi'an KOSUN Machinery Co., Ltd.

2007 KOSUN obtained the right to operate import and export trade.

2007 KOSUN LW450x1800 Decanter Centrifuge with large length-diameter ratio was successfully developed, and the 720mm Series Decanter Centrifuge with maximum diameter was developed in the same year.

2007 The third generation of KOSUN QZS703 Linear Shaker came into the market.

2008 KOSUN signed a contract with Nanyang RG on the supporting project of 2 sets of 50DB and 1 set of 70DB low temperature rig solid control system for Orenburg, Russia.

2008 KOSUN completed the contract with Xinjiang Sanbao Industry Group Co., Ltd. on independently developing and manufacturing three sets of 40DB rig low-temperature drilling mud solids control systems on schedule, and delivered the systems to Kazakhstan Aktau Oilfield for use.

2008 KOSUN provided peripheral equipment and all solid control systems of 10 sets of drilling rigs for a drilling project in Uzbekistan.

2008 KOSUN Jingwei Factory in Xi'an China was completed and put into use.

2009 As the first oversea oilfield service company of KOSUN, Kazakhstan KOSUN Services Company was established in Aktobe.

2010 The final assembly and debugging of ZJ30 truck-mounted drilling rig solely invested by KOSUN for a drilling project in Kazakhstan was satisfactorily completed in Xi'an, China.

2010 As an international sales company of KOSUN, KOSUN Oil field Import and Export Co., Ltd. was formally established in Beijing.

2011 KOSUN signed a contract with Gazprom - the largest natural gas corporation in the world, on the supporting project of peripheral equipment and all solid control systems for three sets of 3000m truck-mounted drilling rigs.

2012 KOSUN Kazakhstan Solid Control Factory was completed and put into use in Aktobe, Kazakhstan, and Kazakhstan KOSUN Services Co., Ltd. obtained an order of providing low temperature solid control systems for 2 sets of 70D drilling rigs from Sino-KZ GWDC.

2013 KOSUN signed a contract with Sichuan Honghua Oil & Gas Engineering and Technology Services Co., Ltd. under Honghua Group, concerning 7 sets of 2000HP onshore rig mud solid control systems in Xi'an, China.

2013 KOSUN Yongle Drilling Fluid Circulating System Factory was formally put into use in Xianyang, China.

2013 American KOSUN Solids Control Equipment Co., Ltd. was established in Huston, Texas, USA, and the brand of Black Rhino was created.