1high power aluminum led light circuit boards pcb 2.al: 1.6MM ... .HASL(Pb free) NO. ITEM INDEX 01Surface treatmentHAL(lead free), Immersion Gold, OSP02LayerSingle-sided, double-sided, ... CNC Route, CNC V-Cut10Testing100% Compute Short/Open Circuit Test11The Minimum Hole Diametersingle-sided 0.8mm, PTH ... , blue, yellow, red1high power aluminum led light circuit boards pcb2.aluminum base: 0.8-3.0MM(1100,3003 ...