Base material: FR4, aluminum, Rogers, PTFE flexible PCB Copper thicknesses: 0.5-6oz Board thicknesses: 0.4-6.0mm Minimum hole size: 0.25mm Minimum line width: 0.12mm Minimum line spacing: 0.12mm Surface finishing: HASL, gold, silver and OSP Yamaha highly accurate placer production line 1 to 22-layer mixed assembly technology, specialized in assembling boards for safety, industry control and power boards PCB or PCB assembly file requests: Gerber files of the bare PCB board BOM (bill of material) for assembly Testing guide and test fixtures if necessary Programming files and programming tool if necessary Our advantages: Our professional engineer can provide PCB design, BOM list and final testing Quick and economic delivery term Double layers FR4 sample assembly will be finished in one weeks Provides PCB and PCBA prototype, medium and low volume quick board services