... board thickness>1.2mm)F, Six layer pcb:430*430mmG,Eight layers:430*430mmH,more than ... Spacing: 4mil (0.1mm)Surface finishing: HASL / HASL lead free, HAL, Chemical tin, Chemical Gold, Immersion Silver/Gold ... welcomed if no Gerber file. B.Large PCB quantity order, quotation will be based on SQM ... Your satisfaction is our pleasure. China High Quality pcb lead free, OSP, HASL, ENIG multilayersPCB from China ...