Here's some info your might found useful when selecting which material best suited to your car. This info is just a guide for you to better understand Fiberglass and Polyurethane.
FIZIKAL TEST FRP
FIZIKAL TEST PU
Which material is better ?
1. Almost all material - ABS, fiber, PU, etc. will be damaged depends on impact when you hit something.
2. Most of the buyer prefers PU - noted that PU cannot be repaired and costly to replace.
3. PU stuff - mostly bumper is expose to distortion in hot climates - for sure in Malaysia.
4. Seller personally recommend Fiberglass - cheap, easy to install, can be repaired, no distortion, longer use.