... PCBSuntech corporation Ltd specializ in Double Side PCB, Multi-Layer PCB, F4BK PCB, Ceramic PCB, Rogers PCB, Aluminum PCB.Layer: 2 Layers Material: ceramic, F4BK ... 4,etcBoard Thickness: 0.4-6.0 mmTreatment : Lead Free HASL, ENIG, Immersion Tin, Immersion Silver, OSP etc. Solder ... sincerely hope to establish longtime and friendly business relationship with you. Good quality, reasonable price and the 5- ...