Oṣu Kẹta ọdun 1993
Awọn ọmọ ẹgbẹ pataki ti ẹgbẹ Yuantai Derun bẹrẹ iṣẹ imọ-ẹrọ ni ile-iṣẹ tube Tianjin Daqiuzhuang.
Oṣu Kẹfa ọdun 2002
Tianjin Yuantai Industry & Trade Co., Ltd ni ipilẹ, ṣe amọja ni onigun mẹrin, paipu irin ṣofo onigun mẹrin, welded galvanized hot galvanized (gbona dip galvanized) tube square, olu-ilu ti o forukọsilẹ jẹ USD 10 million.
Oṣu Karun ọdun 2004
Ọkan ninu awọn ẹka ti Yuantai Tangshan Lituo Steel Tube Co., Ltd. ni a ti fi idi mulẹ, ṣe amọja ni onigun mẹrin onigun gigun welded ṣofo irin pipe.,olu ti a forukọsilẹ jẹ USD 10 million.
Oṣu Kẹrin Ọjọ 2005
Yuantai Steel Square Pipe Co. Ltd ni idasilẹ, amọja ni square alurinmorin ṣofo tube irin ati galvanized tube, awọn aami-jẹ USD 2 million.
Oṣu Kẹta ọdun 2010
Tianjin Yuantai Runxiang ti iṣowo ile-iṣẹ iṣowo ti iṣeto, ṣe amọja ni iṣowo irin rinhoho, oluranlowo paipu galvanized, ati bẹbẹ lọ, olu-ilu ti o forukọsilẹ jẹ USD 2 million.
Oṣu Kẹta ọdun 2010
Tianjin Yuantai Derun pipe Ẹgbẹ iṣelọpọ Co. Ltd ni idasilẹ ni ipilẹṣẹ, ti samisi pe iṣelọpọ ti welded dudu igbohunsafẹfẹ giga-giga, paipu onigun galvanized, paipu welded onijagidijagan, awọn eekaderi paipu ati iṣowo paipu bi ọkan ninu ile-iṣẹ apapọ apapọ nla ti ẹgbẹ Yuantai Derun ti iṣeto ni deede, olu-ilu ti o forukọsilẹ jẹ USD 20 million.
Oṣu Kẹta ọdun 2010
Tianjin Yuantai Derun Investment Co., Ltd ni idasilẹ ni ipilẹṣẹ, amọja ni pq ile-iṣẹ paipu irin, awọn iṣọpọ ile-iṣẹ kekere ati awọn ohun-ini ati idagbasoke ohun-ini gidi ile-iṣẹ, olu-ilu ti o forukọsilẹ jẹ USD 2 million.
Oṣu Kẹjọ Ọdun 2013
Tianjin Derun Runfeng pipe ẹrọ Co. Ltd ni idasilẹ, ṣe amọja ni iṣowo galvanized gbona galvanized (gbona galvanizing), olu-ilu ti o forukọsilẹ jẹ USD 8 million.
Oṣu Kẹta ọdun 2015
Tianjin Yuantai Yuanda anti-corrosion insulation pipe Co., Ltd. ni idasilẹ, amọja ni iṣelọpọ paipu welded ajija ati tita, olu-ilu ti o forukọsilẹ jẹ USD 2 million.
Oṣu Kẹjọ Ọdun 2015
Tangshan Yuantai Derun Pipe Co., Ltd ni idasilẹ, amọja ni ṣiṣan irin, iṣowo paipu irin, olu-ilu ti o forukọsilẹ jẹ USD 1 million.
Oṣu Kẹta ọdun 2016
Tianjin Yuantai Derun International Trade Co., Ltd ti dasilẹ, ti o ṣe pataki ni agbewọle ilu okeere ati iṣowo okeere fun Ẹgbẹ Yuantai, olu-ilu ti o forukọsilẹ jẹ USD 2 million.
