... ISO9001:2008 2.1-16 layer,FR-4,Alu 3. Immersion gold,HASL,OSP 4. Customized design PCB,shenzhen pcb FR-4 1.6mm Single ... : Sample lead time: 2-3 daysMultilayer: Sample lead time: 3-4 daysMass production: Production lead time: Double sided: 5-7days Multilayer ... company our quality products. Many thanks & Best regards,Gigi FR-4 1.6mm Single Side PCB with HASL Finish