We can fabricate heavy copper board and up to 12oz.mainly we can finish them via qiuck turn time.our fastest finished 5 oz 4 layer pcb 5 days.the heavy copperboard widely used in so many fields, such as: phone mainboard, gprs module, 3g wireless wlan card, industrial pc mainboard, mobile handheld devices, network terminal control equipment, communications back etc. Pcb features:1.layer: 42.material: fr43.thickness: 1.6mm4.copper: 5oz5.mini hole: 0.5mm6.mini width/space: 0.4mm/0.4mm7.finish: immersion goldour manufacturing capability:manufacture capability layers: 1-32 layersmaterials: cem1, cem3, teflon, rogers, fr-4, high tg fr-4, aluminum base, halogen freemax board size: 510*1200mmmaterial: rohs directive-compliantpcb thickness: 1.6mm-6.4mmout layer copper thickness: 1-12ozinner layer copper thickness: 1oz-12ozmax board thickness: 6.0mmminimum hole size: 0.150mmminimum line width/space: 3/3milmin s/m pitch: 0.1mm (4mil)plate thickness and aperture ratio: 12:1minimum hole copper: 20mhole diameter tolerance (pth): 0.075mm (3mil)hole diameter tolerance (npth): 0.05mm (2mil)hole position deviation: 0.05mm (2mil)outline tolerance: 0.05mm (2mil)surface finish: hasl leadfree, immersion enig, chem tin, flash gold, osp, gold finger, peelable, immersion silver, enepigsolder mask: green/blue/red/black, purple, white, yellow, transparentlegend: white/black/yellowoutline: rout and score/v-cute-test: 100% top 10 reasons why you should buy pcbs and pcbas from store.