HDI PCB with BGA, Blind and Buried via, Made of FR4 Material 1.UL,SGS,ROHS, ... ,CE,IPC 2..High quality&competitive price HDI PCB with BGA, Blind and Buried via, Made of FR4 Material1.Base Material:fr42 ... : 2000 TS16949 SGS ULsample picture product authenticationcompany profile HDI PCB with BGA, Blind and Buried via, Made of FR4 Material