Access panel of the apearance quality requirements.

Appearance quality requirements:

Point defects: the diameter shall not be greater than 0.4mm, and there shall not be two particles with a diameter greater than 0.4mm within the range of 100mm, and the total number of the same appearance shall not exceed 3.

Shadows, orange lines, exposed bottom materials, fish eyes and wool: these defects are not allowed on side A, and they are allowed to exist slightly on side B without affecting the appearance.

Color difference: the color difference shall not be greater than 2 degrees, and there shall be no defects such as discoloration, fading and dullness after alcohol wiping.

Bending: 1 mm bending is allowed when the length is less than or equal to 1000mm, and ±1.5mm bending is allowed when the length is greater than 1000 mm.