... . 5,Price list:80-155USD/square meter1.aluminum base pcb led light 2.aluminum substrate pcb 3.aluminum base copper-clad ... gold(ENIG),Chemical tin, Carbon ink.8)solder mask color: Green, yellow, black, white, red, blue 9)profiling: Punching, Routing, V ... -60Ω, Tolerance: +-10% Differential Impedance: 90-120Ω, Tolerance: +-10% 16)Quality standard: IPC-A-600F. High Power Aluminum PCB,Aluminum PCB-4