... service 3.quicker delivery 4.UL,ISO9001, pcb board manufacturer/pcb board factory 1.Number of Layer: 1 to 28 layers. 2.Base ... , Black, Blue, yellow, Red etc. 4.Surface Finish: Lead Free HAL, HAL, Flash Gold, Immersion Gold, Immersion Tin, Immersion Silver, OSP, Gold ... , medical equipment, MP4 players, DVD players, GPRS,Power Supply, etc.6.Certificate: ISO9001-2000, ISO14001-2004, SGS, UL 7.Lead time ...