... : 0.5-2.0 oz*Thickness: 0.2-3.0mm*Solder mask: green, black, red ,yellow, ... OSP,silver,goldType of ccl materialFR-4,AL,CEM-1,CEM-3,TG 180 We offer quick ... SERVICE:1) procurement agent electronic components,share with the best quanlity best price's electronic components ... We always try our best to do it.3) Testing PCBA.Assurance of all your product ... VISIT OUR HOME OSP multilayer pcb with 4-20 layer PCB