my window tinting also failed at sin ming. nowadays the SOP they will just use the light machine by default, so EVERYONE will kena.
asked me to come back again to reinspect. i said politely the hell i will come back again. so i ripped them off on the spot and they passed it without using the machine again (coz obviously i ripped it off). i didnt feel any pain coz i didnt pay for the tinting; it came with my car.
so, if you want to play punk, paste 2 layers, like maybe paste another layer of microwave wrap over it. then rip that off in front of them. hahahaha idea boh? pls some hero try and let us know. heheheheh