... based on gerber file 3.UL,SGS,ROHS,ISO9001:2008 FR4 1oz copper thickness double sided pcb Brief introdution of ... professional pcbmanufacturer ,our products include blank pcb, single sided pcb,double sided pcb,multilayer pcb,flexible pcb,fr4 pcb,fr2 ... ” ±10% ( 0.1mmto4.0mm±10% )Min. Single/ Double-sided:0.008”±0.004”(0.2mm ±0.1mm)4-layer ... happily and forever ! FR4 1oz copper thickness double sided pcb