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 Self-clinching screws is a fast and reliable installation, simply riveting special screws which can be achieved for steel, stainless steel, copper, aluminum alloy plate, etc., completely eliminating the waste, the advantages of its use value, more than a little extent the traditional welding methods, and has the following advantages: 
 1, assembly easy, simply riveting; 
 2, high torque resistance; 
 3, no risk of surface finish for coating materials; 
 4 and specifications, to meet a variety of design requirements; 
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