亚洲色黄视频免费观看网站_秋霞精品三区四区电影_男女啪啪又爽又黄大尺度_成人无码视频在线播放_国产女女另类在线播放_国模大胆扒开自慰喷水_丁香五月婷婷中文_国产亚洲日韩网曝欧美台湾_性生生活性生交A级_www.一级毛片在线播放

1. C: C content must be tested, carbon is the most basic element to distinguish steels, the lower it is, the less easy to occur inter-granular corrosion, so stainless steel is also called ultra-low carbon stainless steel. 2.Ni: It can be called Austenitic stainless steel only when Ni is added. It can take away the presence of ferrite. But the content of Ni can not more than the standard, otherwise it is not corrosion resistance.

Wuxi Jindu got“International Trade Green Card”----ISO 90001 Quality Management System Certification

Jindu is moving, as epidemic prevention and control is urgent. In July 2022, the epidemic of Covid-19 swept Wuxi Ciry. We immediately responded to the superior's call of "the epidemic is the order, prevention and control is the responsibility", took the initiative to attack and arrange deployment. We, in the fist time, took the action of enterprise emergency plan, cooperated with the closed-loop production management, so as to achieve epidemic prevention and production can both be guaranteed.

Wuxi Jindu has been approved as a national high-tech enterprise, we are among the leading companies of bellows manufacturing in China.