青娱乐极品视觉盛宴_青娱乐极品视觉盛宴国产视频_国产娱乐凹凸视觉盛宴在线视频

2nd hardest composite iron plate.

Provides excellent flatness, longer service life, low reconditioning needs and refined surface finishes.

Often used as an alternative to cast iron plates.

Produces good surface finish on most materials, especially metals and ceramics