... copper, board T1.6mm 2.Transparent solder mask,HASL lead-free 3.Fast delivery time,with competitive pricing 1. FR4 ... 6mm2. Transparent solder mask,HASL lead-free3. Fast delivery time,with competitive pricing4. Certificate: ROHS, UL, ISO9001-2000, ISO14001Our Manufacturing ... quality management system,Ensure the qualiy of all productsExcellent quality with Low-cost Protopype pcb: $100 for 10 pcsQTY: ...