4Layer Blue Arduino uno PCB Board
	 
	Number of layers: 4
	Board thickness: 2+/-0.18mm
	Size: 225mm*150mm
	Board used: Shengyi (S1000-2)
	Minimum aperture: 0.2mm
	Surface treatment: Immersion gold
	Minimum hole copper: 25um
	Table copper thickness: 1OZ
	Minimum line width/spacing: 0.085mm/0.085mm