The lampblack machine to buy. There has been no tear the film. That is similar to the white plastic, very thin], now again tear is not very easy, but just like glue, stick to the appliance with a blade surface, if the like will leave traces, have what chemical method? Or is a shortcut?
If you are afraid of scratching, change it to a coarse cloth or the cloth we use for washing dishes.It is not recommended that the metal be burnt by burning.
Find a wire brush to take up some water, then get some toothpaste and rub it slowly.
Special cleaning agent for cleaning air conditioning (such as "off", air conditioning has too much oil cooling effect on the use of this, the effect is very good), refrigeration accessories shop sell.