Method 2: The part stained with cement can be heated by a hair dryer. Because of the different temperature expansion, cement and plastic can generally fall off automatically.
Method 3: Cut between paint and cement with a blade, and then wax. If you can't cut it, you can try to grind off the cement carefully and gently with an angle grinder and then wax it. You must be very careful not to wear off the paint. Please master the operation.
Method 4: spray white vinegar on the cement with a watering can, wait for 3-5 minutes, and then gently shovel it with the abandoned bank card, and the cement will fall off in pieces. Then, just wash it with a neutral car wash on the painted surface sprayed with white vinegar. The recovery effect is 65,438+000%, and there is no cement residue.