... manufacturing: 1. High Quality PCB 2. Using Latest Technology 3. Produce PCB and FPC board 4. UL, RoHS, SGS High Quality PCB Manufacturing Shenzhen ... Time for Hi-frequency PCB1) Sample within 6 days for high frequency board2) Normal pcb within 4 days for sample3) ... free Materials (RoHS Compliant) , CEM-3, CEM-1, Aluminium, High frequency Material (Rogers, Teflon, Taconic)Layer No.1 - 30 LayersBoard ...