色欲AV在线精品老司机_午夜少妇好好A∨在线观看_永久免费A级在线视频_日韩美女玉足一区亚洲

Yangzhou chengde steel pipe keep striving to be “world-leading heavy caliber seamless steel pipe manufacture”, and take “energizing enterprise by science and technology, strengthening nation by science and technology” as mission, to constantly improve enterprise technical innovation ability.

 

Yangzhou chengde signed a cooperation agreement with gentral Iron & Steel Research Institute, Successful establishment"JOINT LABORATORY OF LARGE DIAMETER SEAMLESS STEEL PIPE",together  with gentral Iron & Steel Research Institute , First-class scientific research platform, high-quality scientific and technological achievements, and top research team ,and Yangzhou chengde Long term focus on seamless steel pipe research and development, production, testing and other fields of advantage, We should strengthen mutual exchanges of talents and technologies, join forces, and constantly upgrade their technological innovation capabilities, and strive to build "Prudential" international famous brands and revitalize national industries.