... China Thickness:9,10,12,18,35,70,105 micron copper foil for EMI RFI Lithium batterySINFOIL is a professional manufacturer and exporter ... produce 9,10,12,18,35,70,105 micron electrolytic copper foil for PCB, CCL, EMI, Lithium Battery, and Polymer Lithium Battery etc ... STD and THE copper foil. The content of cu is above 99.5%. We can also process with customer’s samples. copper foil for EMI RFI ...