China PCB suppliers Product Highlights锛?br/> OSP with carbon ink technique Product parameter锛?/strong> Layers2L board MaterialFR-4 Thickness1.2mm+/-10% Surface processingOSP+Carbon ink Copper thickness1 oz Drill hole(Min.)0.25mm Min. line space4mil Min. line width4milChina PCB suppliers website:http://www.ibe-technology.net/pcb/