Changzhou Yingyuan Metal Materials Co., Ltd is separate from a stainless steel pipe factory in and operates as an export center of different tubes & pipes. Our specializes manufacturing seamless pipes, which are widely used petroleum, petrochemical, chemical machinery, boilers, heat ...

Opaali Technology Co., Ltd. is a technology and market oriented enterprise focusing on high performance surface treatment of powder material relative solution. The main products are hundreds powders treated according to difference application. By insisting the ideas Technology, ...