1)Anti-corrosion, in the wet, salt spray, acid rain, corrosion, mildew, not insects.
2)The shape and size are stable, not loose, no deformation.
3)With self-flame retardant, will not burn.
4)Beautiful appearance, strong texture, rich colors, easy to scrub clean.
5)Using lightweight and flexible, impact resistance, no sound when the switch.
6)Basically no maintenance, no paint, low cost of use.
7)Air tightness, watertightness, etc. is much better than steel, wooden doors and windows, generally higher than their 2-3 levels.