... with 1.0mm Board Thickness, Immersion Gold Finishing, Used for Telephone Purpose 1.UL,SGS,ROHS,IS09001,CE,IPC HDI PCB ... with 1.0mm Board Thickness, Immersion Gold Finishing, Used for Telephone Purpose 1.Base Material:FR42.copper thickness:1oz3.board thickness ... with 1.0mm Board Thickness, Immersion Gold Finishing, Used for Telephone Purpose