pcb manufacturing: 1. High Quality PCB 2. Using Latest Technology 3. Produce PCB and FPC board 4. UL, RoHS, SGS High Quality PCB Manufacturing Shenzhen Yuzhixiang ... 4, Hi-Tg FR-4, Lead free Materials (RoHS Compliant) , CEM-3, CEM-1, Aluminium, High frequency Material (Rogers, Teflon, ... 45°V-cut15° 30° 45° 60°Surface finishHAL, HASL Lead Free, Immersion gold, Gold plating, Gold finger, immersion silver ...