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 20*30cm single Side Prototype PCB Universal Printed Circuit Board 
	Name: 20*30CM single-sided tin spray universal board 
	Size: 20*30CM 
	Material: KB A grade uniform material 
	Thickness: 1.6MM (positive and negative 0.05-0.1 tolerance) 
	Hole distance: 2.54MM pitch 
	Aperture: 1.0MM 
	Number of holes: 76*114=8664 
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