Stainless Steel Band Surface:2B,mirror polished,8K Round edge Different ... of green material.7.Othe machinable surface: drawing,etching,8k[mirror]Matte,punch boards,embossing plate.8.Advantages ... or as your request.Characteristics andapplication 2B The surface brightness and flatness of 2B is better than ... 2D.Then through a special surface treatment to improve its mechanical properties,2B ...