electronic pcb design 1.good quality,reasonable price 2.one-stop service 3.quicker delivery 4.UL,ISO9001,ROSH electronic pcb design 1.Number of Layer: 1 to 28 layers. 2.Base Material: 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 ...