1978? ??, Tieqiao Xie?? ???? ???Hejian????????? ????Cemented carbide drawing Die? ?????.
1979?~1985?? ???? ??? ?? ??? ???? ??? 40??? ???? 300 ???? ???.
1986?, Tieqiao Xie???? ??? ???????? ???? 7.1 (????????)?? ??? ?????.
1987?, Tieqiao Xie???? ??? 1/850 wire drawing??? ??????? ?????.
1988?, ??? ?2 PC???? drawing die-making shop? ?? ?????? ?? ??? ???? ???? ?????drawing Die? ?? ????? ?????.
1989?, ??PC??1??????? ?? ???? ???????? ???drawing Die ? ?? ?????.
1990? ???????????drawing die-making shop? ?? ???? ??? 60??? ??? ???? 600???? ????? ?? ???drawing Die ????? ???? PC??drawing Die? ?? ????? ???.
1991?, ???PC??, PC????? PC?? ????? ?? ????? ?????.
1992? ??????????,Hejian???? ???? ???Hejian?PC????? ?? ?? ?1?? ??PC?? ????? ?? ????? ?????? ????,????? PC????? ?? ??? ?????.
1993?, ??? PC?????drawing Die? ???Spiral rib PC?? ? ??? ?????.
1994?,??PC??1??? ??PC??1??????? ?????.
1995?, ??Slack helical rib pre-stressed steel wire? ????? ?????GB/T5223-1995 ??? ?? ??? ???? ????? ??? ?????.
1996?, Slack helical rib pre-stressed steel wire? ????GB/T5223-1995????? ?? ??? ??? ??? ???? PC??? ?????? ?????? ??? ?????? ???? ???.
1997?, Low relaxation helical rib pre-stressed steel wire? ????? ????? ????? ????,???,????????,??T?????? ???? ?????.
1998?, ????PC??????? ??? ???? ????? ?????? Shagang ??? ?? 77B??? ??? ??? ?? ????? ?????
1999?, -40?? ??????? ??? ? ?? ???Slack helical rib pre-stressed steel wire? ????? ?????.
2000?, ??? ??? ????? ???????????? ???? ????? ?? ??? 10??/?? ????.
2001?, PCCP??? PC??? ????? ??????GB/T5223-2002???? ??? ? ????.
2002?, PC??? ??????? ???? ??? ?? PC???? ??? ????? ? ????.
2003?, 9.0mm,10.0mm ???Slack helical rib pre-stressed steel wire? ????? ???? ? ?? ?2????? ???? 15??? ??? ?????? PC???? ???? ???? ???.
2004?, ????? 9.5mm ???Slack helical rib pre-stressed steel wire? ??? ??? ??? ????? ?? ?????? PC??? ????? ???? ???.
2005?, PC????? ?????? ?????????????? ???? ????? ? ????? ????? 25??/?? ????.
2006?, II? ??PC ????? ??? ??? ?? ??? ??? ??? ???? PC ? ??? ?? ????? ?????.
2007?, I? ??PC ????? ????? ?thread rolling ??? ?? ????? ??? ?? ??? ?? ????? ??PC??? ?? ????? ?????.
2008?, I? ??PC ????Tensioning anchorage ???? ?? ????? ?????.
2009?, III?longitudinal ???? ????Tensioning anchorage ???? ?? ????? II? ??PC ????? 10mm Slack helical rib pre-stressed steel wire? ?? ????? ? ???? ?? ?????. ??? ???? ?? ??? ??, ???????, ???? ??? ????? ?????? ???? ????? ??? ??? ?? ??? ???.
2010?, ????PC????????? Hejian ???? ?????. I? ???PC??? ????? ??? ????? ???? ????? ???? ??? ???? ???? ? ??? ??. Yuqiao??? ?? ????? ?? ???? ??? ?? ???? 25.8?? ? ????.
2011?, ??? ???? 27.2??/?? ???? ??? ??? ???? ?????? ? ???? ???? 10.3??/?? ?????. ????? ????? ??? ????? ? ???? ???? ????? ????? ?????? ???? 40??? ?????.
2012?, Hejian?baozeron????????? ???? ????,????? ?? ? ?? ?? < Pretensioned prestress system for ballastless track structure ??? ??(2012G005-A)> ??? ????? ???? ????? ????? ???? ???. Hejian?? ??? ? ???????? ?????????, ?????? ? ?????? ???Pre-tensioned pre-stressed concrete track plate? ????? ?? ???.
2013?, ????????PC??????? ????? 2013??? ??3? ????? ???? PCCP??? ??? 30?? ?????. 6?26?, ????????? ???
2014?,?????? ???????? ??? Zhengzhou-Xuzhou High-speed Railway CRTS III?Pre-tensioned pre-stressed concrete track plate??????? ?????Duanyuan town ??????? ???? Duanyuan town ??????? ?? ??? ??? ??????
2015?,2?27? ??????? ??? ?????? A-share? ????? ?????. ????PC??????? ???? ??????? ?????? ?????? ???? ?????.
2016?, CRSD-2025 ??? ????? ????? ????? ?????? ?????? ? ??????? ???? ??? ?????. ????? ??? ? ????????? ?? ?????? ???? ?????.
2017?, ????? ??? ???? ?????? ???? ?????? 8?22?, ?? ????? ??????? ???
