6L Immersion gold PCB with PCB Assembly Express PCBs Immersion gold finish pcb PCB Assembly 6L Immersion gold PCB with PCB AssemblyExpress PCBsImmersion gold finish pcbBasic electronic parameters: ManufacturerRayPCBOriginal placeShenzhen ChinaBoard materialFR4Tg130°CBoard thickness2MMLayer number6LFinishing copper size1/1OZMin Line Track/Width0.3014MMMin Line Space / clearance0.3297MMMin hole ...