... in Guangdong, China. It's specialized in manufacturing single side PCB, double side PCB, multilayer PCB, especially in aluminum PCB, DVD ... for your reference: Product Categories:single/double sided board, multi-layer board, high density board, including MLB with blind/buried via holesMain ... Thickness:Inner core thickness 0.15-1.5mm, finished board thickness 0.20-3mmCopper Foil Thickness:1/3 OZ–5 ...