... ,ROHS PCB assembly specific introduction:1.Optional materials:Aluminium alloy,ABS,or other materials2.Layer: 2 layers3.Surface finish, HAL lead ... The othere surface finish we could do are; Gold finger, OSP, ENIG, HAL, Gold plating, Chemical silver, etc.7.The ... and other industries equipment productsCertificationISO9001-2000,UL,RoHSR&Dengaged in PCB assembly, LCD driver, ODM and OEM ect productsany ...