... , ISO9001:2008, ROHS compliant,SGS Test 2.Aluminum material 3.9 years factory experience Aluminum Based, copper based, Iron Basesd LED boardWhat ... LED products.3. Board thickness: 0.4~3.2 mm Aluminum board4. Copper thickness: 17~210 um 5. Surface finishing: HASL ... Green, Matt Black etc.Surface FinishingHASL,Immersion Silver/Gold, OSP,Plate Gold, Gold Finger led aluminum board