How to make mobile phone rubber coat non stick ash?
Stained with ash is not terrible, with a period of time you can use clean water with a small amount of detergent, wash it; if the stain is very serious, you can use alcohol wipe, and then clean with water.
Silicone mobile phone sets can not be stained with gray, if not stained with gray, it certainly does not slip ah (such as stainless steel)