1. Cosmetic view:
No white spots, No dent, color look good, the film is 90angle in four corners or not,
if it is not, the laminating will meet trouble, shifting.
2. Function test:
cut one small piece, according its angle to attach the panel you wanted to be use.
And check:
• color is right,
• view angle: up and down, right and left. According to panel’ spec. it is matched or not.