Layers of communication circuit PCB board: 4
Plate thickness: 1.0 ± 0.1mm
Surface treatment: Lead Free Tin spray + gold finger
Process features: impedance control, long and short gold fingers
Process details: finished product size 137.6 * 75.7mm
Plate: type, plate thickness, thermal shock, plate copper thickness, plate appearance, fire rating
Liquid medicine: concentration, color, weight, quantity, integrity of outer package, etc
Ink: weight, color, expiry date, appearance