... sided pcb Technical parameter:layer: 1 layerThickness: 1.6mmfinish coatting: Immersion goldcopper size: 1 ozSolder mask: greenMaterial: 94HBMin.hole size: 1 ... /treatment : HASL / HASL lead free,HAL, Chemical tin,Chemical Gold, Immersion Silver/Gold,OSP,Gold plating 8) Copper thickness: 0.5 ...