How to take off stickers from plastic surface without damaging the stickers?

Question

stickers sticked on plastic covers for labelling purposes

Answer 1

Apply slight heat using a blow dryer, then use a small cotton pad with a solvent such as rubbing alcohol to loosen the glue. Using a thin single edged razor blade, slide the edge of the blade under one corner to raise the corner enough to grab the sticker with tweezers.  Apply more heat with a blow dryer if necessary to soften the glue and pull the sticker up very slowly until if fully separates from the plastic.

Answer 2

Go and suck a*s.