... process capacity for your reference, for more messages, pls contact with us freely!ItemSpecification MaterialFR-4 / Hi-Tg FR-4 ... side Solder Mask Thickness0.7mil,raised H≤0.05Colour green,blue,red,yellow,black,white(LPI/MATT.,UL 94 ... HALtin height≤0.05mmENIGNickel 3-7um,gold:0.5-0.7umOSP/flash gold 0.2-0.5umPealable maskcover all ... ,ROHS,UL, Welcome to visit WALBOND ! 4L PCB with BGA and gold finger