HISTORY

Please slide right and right to see more of our history

1973

Tang Steel Design Department

Tang Steel Design Institute

1984

1992

Tang Steel Design Institute

Engineering Consulting Class A certificate issuedby Stae Planning Commission on Dec.1995

1995

2001

Tang Steel Group Design & Research Institute Co., Ltd.

Metallurgical industry, construction engineering,municipal engineering design certificate issued by Ministry of Construction

2002

2004

Tang Steel Design $ Research Institute Co., Ltd.

2010

2012

Tang Steel International Engineering Technology Co., Ltd.

Tang Steel International Engineering Technology Co., Ltd.

2016

色欧美片视频在线观看_精品国产综合区久久久久久_亚洲综合色自拍一区