As a China professional PCB&PCBA manufacturerú¼Greentek Electronics Co., Ltd specialize in single sided PCB, Double Side PCB, Multi-Layer PCB, F4BK PCB, Rogers PCB, Aluminum PCB. Produce: Single sided PCB, Double Side PCB, Multi-Layer PCB, F4BK PCB, Rogers PCB, Aluminum PCB. Layer: 1-22 Layers Material: F4BK-2 , Aluminum, Rogers, High Tg FR4, FR1, CEM-1, FR-4,etc. Board Thickness: 0.4-6.0 mm Treatment: Lead Free HASL, ENIG, Immersion Tin, Immersion Silver, OSP etc. Treatment Solder Mask: Green, Red, White, Yellow, Black, Blue. SERVICE: * Provide quickturn prototype and small quantity PCBs with short lead time. * Quality excellent and stable. * Best material for all our products. * DHL, TNT, UPS, FEDEX etc. to saving the transport time. * 24hours-7days- 365days response. We sincerely hope to establish longtime business cooperation with you. Top quality, reasonable price and the 5-Star service are guaranteed. We look forward to your detail Gerber files and will be your most reliable partner in the soon future. vacuum packing