Hallmarking and Purity Identification: \n This stamp, also known as a trademark, identifies the company or \n individual who created the ring. It\'s akin to a fashion label and helps \n establish the authenticity and origin of the piece....
Progressive metal stamping is one type of metalworking which involves punching, coining, bending and many other techniques that modifies metal components and raw materials of metal stampings combined with automatic feeding system....
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