... circuit board 1) Material:FR4; 2) Certificate: UL, ISO, TS16949; 3) Paypal, T/T,Western Union, led par circuit board 1 ... . ONE-STOP-SERVICE2. OEM service3. Gerber file needed4. PCB clone with sample5. Quality guarantee and professional after ... PCB Layer1 to 28 layersMaterial typeFR-4, CEM-1, CEM-3, High TG, FR4 Halogen Free, RogersBoard thickness0.21mm to 7 ...