1.UL,SGS Test,RoHS and 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 Side PCB with HASL Finish Product size: 109.7 ... quality products. Many thanks & Best regards,Gigi FR-4 1.6mm Single Side PCB with HASL Finish