Yes tpu case do scratch but hard shell and silicone do not
no
plastic and aluminum
Yes, plastic can scratch metal surfaces because plastic is typically softer than metal.
Yes
NOTHING
plastic rubber glass metal
They all have plastic in them
Yes
its cheaper to make a plastic from scratch !!
Yes it can. It is hard and plastic and can scratch the clear coat and paint. If it gets caught in your wheel it can do more damage..
Try Displex Display Polish, it got the scratch out of my PlayStation 3, it also works on iPods and anything else that scratches.
Try: NOVUS PC-20 Plastic Fine Scratch Remover or Quixx Paint Scratch Remover All the best