PCB/Printed Circuit Board copper thinkness:1oz base material:FR1 min hole:0.4mm min line width:4mil PCB/Printed Circuit Board · FR1 Single Sided PCB with Peelable Mask, V-Score. · FR4 Single Sided PCB with Red Solder Mask, HASL Finish, Contour Punched. · FR1 Single Sided PCB with Flash Gold, Peelable Mask, White Legend, Hole & Contour Punched. · FR1 Single Sided PCB with Green Soldermask, Yellow ...