... (lead free), Immersion Gold, OSP02LayerSingle-sided, double-sided, multilayer and special structure layer03Max size1200mm*600mm04PCB thickness0.5-3.3mm05Copper ... Punching, CNC Route, CNC V-Cut10Testing100% Compute Short/Open Circuit Test11The Minimum Hole Diametersingle-sided 0.8mm, PTH 0. ... , black, blue, yellow, red1high power aluminum led light circuit boards pcb2.aluminum base: 0.8-3.0MM(1100,3003 ...