Before revision: CBS News Follows America's Electronic Waste As It Is Illegally Shipped To Become China's Dirty Secret Counterfeiting techniques The alteration of existing units is done through sanding and re-marking, blacktopping and re-marking, or similar methods of concealing the original manufacturer.
After revision: Counterfeiting techniques The alteration of existing units is done through sanding and re-marking, blacktopping and re-marking, or similar methods of concealing the original manufacturer.