Among those famous high wattage electronic led pcb, indoor and outdoor led pcb board design ... and producing manufacturers, Rigao Electronics is a professional high wattage electronic led pcb, indoor and outdoor led pcb board design ... Sliver, Immersion tine,OSP(Entek),S/G plating,Enepig, G/F Plating, carbon9Copper thickness0.5-4.0oz10Solder mask colorGreen/black/white ...