1. The surface of the product shell should be flat, smooth, beautiful, uniform in color, and free of defects such as bumps, spots, cracks, burrs, deformation, delamination, flow marks and scratches.
1. The surface of the product shell shall be flat, smooth, beautiful, uniform in color, and free of concave convex, spots, cracks, burrs, deformation, delamination, flow marks, scratches and other defects.
1. The surface of the product shell should be smooth, bright and clean, beautiful, uniform in color, and free from defects such as bumps, spots, cracks, burrs, deformation, peeling, flow marks and scratches.