... (0.076-0.10mm) · Maximum board size: Single & Double 22 "x 43" (550 x1100mm), Multi-layer 22 "x 25" (550mm x 640mm ... : FR4 ( ShengYi, KB, International), high TG (TG150, TG170), halogen-free board (Halogen-free), high frequency plate (Rogers, Teflon, Taconic), made PTFE ... service 24 hours for 2-Layer sample 48 hours for 4-Layer sample 72 hours for 6-Layer sample 1.ROHS compliant PCB ...