... are with UL approval. Advantech PCB provide wide range circuit boards, we have over 10 years exprience in the ... thing is we always use grade 1 and 2 material, which is the basic to maintain good quality, ... mm and 3.6 mmCu-thickness : 17µ, 35µ, 70µ, 105µMaterial:CEM1, CEM3, FR1, FR2, FR4, HighTg, Teflon, Rogers, Arlon ... a label according to Labelling Instruction. multilayer Printed Circuit Board