oz -4-4mils track width spacing -0.2mm min finished hole size -certificate: ul, rohs, t/s16949 -company management: iso9001:2000 -markets: europe, america, asia Customers' design our advantages: 1. Offering one-stop service as pcb design, pcb production, and pcb assembly. 2. Hot selling products:  aluminum pcb  fr4 pcb  double-sided pcb  high-density multilayer pcb  multilayer pcb  pcb assemblies  single-sided pcb 3. Owns more than 5000 sqm plant with over 10000 sqm per month production capability 4. All products have iso9001:2000, ul , and rohs certificate approval 5. Fast lead out time