2014.01 Qingdao motuotai electronics co., LTD. Was set up
2014.10 zhuzhou yujin denso co., LTD. Was set up

2011.02 liuzhou yujin denso co., LTD. Was set up

2010.05 weihai san yuan plastic technology co., LTD. Was set up
2010.09 jingzhou yujindenso co., LTD. Was set up
2010.09 Qingdao san yuan de xin plastic technology co., LTD. Was set up

2009.08 Qingdao sanyuan DE xin investment management consulting co., LTD. Was set up
2009.09 Qingdao xinyuan investment co., LTD. Was set up
2009.11 Qingdao xin sanyuan plastic technology group co., LTD. Yantai branch established

2007.07 Qingdao sanyuan de xiang industry &trade co., LTD. Was set up

2006.02 Qingdao kai yuan electronics co., LTD (china-south Korea joint venture)
2006.03 Qingdao san yuan electronic technology co., LTD. Was set up

Qingdao xin sanyuan plastic technology group co., LTD. Was set up

2003.12 Qingdao san yuan international trade co., LTD. Was set up

2002.07 Qingdao sanyuan (china-south Korea joint venture) sensing technology co., LTD.,
(2002.09 Qingdao riken electronic co., LTD., China and South Korea)
2002.09 Qingdao sanyuan medical equipment industry and trade co., LTD. Was set up
2002.12 for the conversion of Qingdao sanyuan group co., LTD

2001.05 Qingdao feileer, machinery co., LTD. Was set up
2001.07 the sanyuan group industrial park is based
2001.07 Qingdao sanyuan light steel co., LTD. Was set up

(2000.11 to Qingdao yujin denso co., LTD., China and South Korea)
2000.12 Qingdao san yuan titanium equipment co., LTD. Was set up
2000.12 in the process of forming the sanyuan group industrial park

Qingdao riken electric wire electric cable co., LTD. (sino-japanese joint venture)

Qingdao riken electric fittings factory was set up