How do you tear up the film on the green board?
With the textile industry cleaning agent (bottled called A1) can be removed, I tried, yes.
The area is not large, you can use banana water up, and then wipe a clean ball on it.
Water with sulfuric acid, otherwise it will corrode, soaked with a clean ball. 4: blow dryer, heat, and then remove or use wood shovel, rubber mark can be erased with solvent oil
