Printed Circuit Board of 6 layers Special thickness of 1. ... size of 0.015mm4. Impendance ControlOur PCB capacity as below:Base material: FR4, FR1, FR2, Ceramics, Aluminum, Rogers, F4B, ... , F4BT, TP, PF, CEM-1, CEM-3, etc. Board thickness: 0.30 to 3.20mm (12 to 26mil) Copper ... x 24) Board finishing type: Hot air leveling, soft gold, hard gold, immersion gold, gold fingers. 6 layers Printed Circuit Board