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.