タイトルまたは説明

the caster wheel ball 1, carbon steel ball the material: AISI ***0, ***5 the grade: G****-G*0 the size: 3mm**0mm the application: Casters, bicycle parts, light-duty bearing, hardware, toy，shot and so on. 2, chrome steel ball the material: AISI ****0 the size: 3mm**0m the grade: G**-G***0 the application: bearing, ball screw, linear motion guide, automotive parts, chemical, food processing, ink and paint grinding.