... is of my company's process capacity for your reference, for more messages, pls contact with us freely!ItemSpecification MaterialFR-4 / Hi-Tg ... on trace,Value≤30Ω Outline Outline Tolerance±0.2mmBeveling30°,45°V-cut position/depth±0.2mm(length≤100mm)/±0.2mmPunch±0 ... percent97% pass for the first time,+/-2%(tolerance) Certificate SGS,ISO,ROHS,UL, Welcome to visit WALBOND ! 4 Layer PCB with buried&blind ...