... multi-layer boards.2.HAL, HAL lead free, Immersion Gold/ Silver/Tin, OSP3.Fast turnaround Prototypes & mass ... Brand Name: RIDECONSurface Finishing: HAL, Lead Free HAL, Immersion gold, OSP, Immersion tin, Immersion silver, etcSoldermask: green, black, blue, white, yellow, ... bonding pad diameter10mil10Max proportion of drilling hole and board thickness1:12.511Minimum linewidth of Idents4mil12Min Height ...