1.Single side Aluminium PCB board 2.Copper Thick:1oz 3.Min Line Width:0.1mm 4.UL,ISO9000,ISO14000,ROHS Base ... Shenzhen ,and it is for producing quick PCB and small quantity PCB.Another is in Jinangxi Province,this is produced ... We are gold Supplier of Alibaba, we have received ROHS,ISO9000,ISO14000,and UL approvals,so you can believe ... us if you are in need. Best Regards, Single side Aluminium PCB board