... wight 0.5oz ~ 3.0oz Laminate Materials FR-4,FR-1,,FR-2,CEM-1,CEM-3 Board Cutting Max. number of layers 8 Min ... ” (0.02mm) Aspect ratio 20(5:1) Solder Mask Color green,light green,white,black,dark brown,yellow,red,blue Min. solder ... ° Others UL Cert. YISO Cert.ISO9001TS16949YISO14000Y Factory Silhouette: green solder mask double sided pcb board