... services. 17 years of experience in PCB industry. UL,SGS,ISO9001,RoHS,QS9000 and ISO TS16949. ... Layer:1~22 layersMaterials: FR-4, CEM-3, Teflon, Aluminum, Rogers, High ... Copper Thickness 4oz140μm8Max. Board Thickness 0.189"4.80 mm9Min Board Thickness2L0.008"0.20mm 4L0 ... is to demonstrate the ability of our PCB factory, if you have specific requirements, ...