... PCB, Multi-Layer PCB, F4BK PCB, Ceramic PCB, Rogers PCB, Aluminum PCB.1.Single-sided, double-sided and multi-layer boards.2.HAL, HAL lead free, Immersion Gold ... / Silver/Tin, OSP3.Fast turnaround Prototypes & mass production.4.Lead time of 7-21 days, according to quantities and PCB ... : HAL, Lead Free HAL, Immersion gold, OSP, Immersion tin, Immersion silver, etcSoldermask: green, black, ...