... board T0.2mm 2. Immersion gold 3. Application moblile phone keyboard with competitive price. 1. PI material, 1oz copper, board ... T0.2mm2. Immersion gold3. Application moblile phone keyboard with competitive price5. Certificate: ROHS, UL, ISO9001-2000, ISO14001Our ... PTH: ±0.076mm , NPTH: ±0.05mm14. impedance control tolerance: ±10%15. Warp and Twist: <0.75%16. Tested by:Flying-Probe ...