[VIP第9年] 指数:7
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The main function of screws is to connect two workpieces together and tighten them. Screws are used in general equipment, such as mobile phones, computers, cars, bicycles, various machine tools and equipment. Screws are used in almost all machines.
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The main function of screws is to connect two workpieces together and tighten them. Screws are used in general equipment, such as mobile phones, computers, cars, bicycles, various machine tools and equipment. Screws are used in almost all machines.
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