A coating, the coating - pressure molding of sheet metal, the coating should be visible to the naked eye, cracked concrete and scratches error.
A coating, the coating - pressure molding of sheet metal, the coating should be visible to the naked eye, cracked concrete and scratches error.
有涂层、镀层的压型金属板成型后，涂、镀层不应有肉眼可见的裂纹、剥落和擦痕等缺陷。