... & Prototypes such as GPS board ,USB board,remote control board... Pcb assembly we are providing:. Base material: FR4, FR1, FR2, CEM ... solder mask, Peel able solder mask, UV solder mask. Minimum line width: 0.1 mm (4 mil). Minimum line space: 0.1 mm (4 mil). Minimum hole ... , hard .Gold, immersion gold, gold fingers Those who look for PCB ASSEMBLY for GPS board start with sincerity, contact with us ...