... knownexpert all over the world, which is famous manufacture in making rollers. Steel Roller’s DetailsSteel Roller, Shanghai ... , Z and other structure.Processing: Chroming, Ceramic, Hard Chrome plating (Dupont formula), chrommantel compact, adhesion strong.Mirror, 3M grinding ... straightness≤0.001mm, run out≤0.001mm.Application: used in plastic films/sheets/plates, textiles, paper, leather, leather, ...