https://www.atzmould.com/wp-content/uploads/2020/11/steel.jpg600800waynehttp://www.atzmould.com/wp-content/uploads/2021/03/png_画板-1-300x115.pngwayne2018-12-03 03:25:302021-03-08 06:52:58The hardness of mold parts is the main factor affecting wear resistance
