... PCB Manufacturer------------------------------------------------------------------------------- 1> PCB Processing Details: Place of Origin : Shenzhen China (Mainland)Brand Name: T-SOARLayers of Number: 2 LayersBase Material: FR4Copper ... (Tin-Lead Free), ENIG(Immersion Gold), Immersion Silver , Gold Plating (Flash Gold), OSP, etc.14SoldermaskGreen, White, Red, Yellow, Black, Blue, transparent ...