... : FR-4, CEM-3,CEM1, Aluminum Substrate, Rogers, Halogen Free, High Tg. 3.The color of soldermask and silkscreen: Green ... White, Black, Blue, yellow, Red etc. 4.Surface Finish: Lead Free HAL, HAL, Flash Gold, Immersion Gold, Immersion Tin, Immersion Silver ... -phone motherboard, LCD of mobile, computer display card, blind&buried board, wireless router, medical equipment, MP4 players, DVD players, GPRS, ...