... assemblying, including material purchasing test, packing and quick del FR-4, multi-layer pcb,Detailed technical requirements ... MaterialHigh FrequenceROGERS ,TEFLON ,TACONIC ,ARLON) Halogen-free Material19Other test Impedance,,Testing,Resistance,,Testing, Microsection etc., 20Special technological ... bured via board,single board,double-sided board,multi-layer board.Hasl board,immersion gold,immersion ...