Detailed Product Description 1,multilayer printed circuit board/pcb,4-layer2,base material:environment conservation fr-43,board thickness:0.8mm4,min.hole size:0.3mm5,min.line width/spacing:0.8mm6,surface finishing:immersion gold,immersion tin7,size:50mm*203mmOur Production Capability For Other PCB:1)Layer:1-162)MAX.Board Size For Single/Double-Sided PCB:800*5503)Solder Mask:green/red/blue/white/ ...