PE protective film black and white black and white plate protective film 
 Black and white film: suitable for stainless steel plate, aluminum plate transparent colored black and white film PE protective film: ① performance test: easy to paste on the surface stripping, unwavering plastic, steel bending with 90 ° is not broken, do not fall off. ② load test: 360 small. 
 ■ ① performance test: easy to paste on the surface stripping, unwavering plastic, steel bending with 90 ° is not broken, do not fall off. 
 ■ ② load test: 360 hours 20 ℃ -50 ℃ to withstand 2Kg/2.5cm2 no glue residue load peel surface. 
 ■ ③ aging test: 300W UV light irradiation conditions at 50 ℃ 240 hours, no crack, no distortion, no residual glue surface tear phenomenon. 
 ■ ④ Moisture resistance test 1 hour + 1 hour light rain> 240 hours do not fall off, peel off the surface without adhesive residue.