少妇一夜三次一区二区,WWW插插插无码视频网站,精品无码一区二区三区电影,sM调教我的奴性奶牛女友小说

3
Products

Coating equipment for pipe inner wall PECVD

The inner wall coating of pipes with a length of at least 12m can be made
The inner diameter of the pipe can be selected from 50mm~300mm
Coating options:
DLC coating, Si-based DLC coating, Si-C-N coating Coating properties: Super lubricating coating, super hard coating, impact resistant coating, wear resistant coating