... gold plated PCB prototype PCB process capability:1.Layer: 2-22 layer2.Product type: Rigid PCB,High Density Inverter PCB,thick copper ... , Aluminum Substrate, Rogers, Halogen Free, High Tg 4.Copper Thickness: 140micron(4oz)5.Min Board Thickness: 0.4mm6.Max ... coating: Lead Free HAL, HAL, Flash Gold, Immersion Gold, Immersion Tin, Immersion Silver, OSP, Gold Finger Plating, Carbon Ink Printing, Peelable ...