... FR-4, CEM-3,CEM1, Aluminum Substrate, Rogers, Halogen Free, High Tg.3.The color of soldermask and silkscreen: Green ... , Black, Blue, yellow, Red etc.4.Surface Finish: Lead Free HAL, HAL, Flash Gold, Immersion Gold, Immersion Tin, Immersion Silver ... card, blind&buried board, wireless router, medical equipment, MP4 players, DVD players, GPRS,Power Supply, etc.6.Certificate: ISO9001-2000, ISO14001- ...