◪Metal processing, referred to as metalworking, is a kind of metal material processing into goods, parts, components of the process technology, including large-scale bridges, ships and other parts, and even the engine, jewelry, wristwatch micro-components.
◪It is widely used in different fields such as science, industry, art, handicraft and so on.
◪Good shell, not only to enhance the appearance and quality, help you improve the competitiveness of the product, not only save money, but also make money.
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