... UL,ROHS,REACH,SGS OEM,ODM Immersion Gold BGA six layer board CategoryItemHigh-volume processing capacitySample and small batch ... Product CategorySingle / dual panel, multilayer, high-frequency board, with buried / blind plateMulti-material mixing pressureSurface TreatmentChemical Immersion Gold, ... 2000mmImpedance Impedance Tolerance±10%±5% Immersion Gold BGA six layer board,6 layer pcb board