... lead-free,HAL,Flash gold,immersion gold,OSP,Gold Finger Palting,Selective thick gold plating, immersion silver,immersion tin, Carbon ink,peelable mask Board Size: 650mm*1000mmBoard Layer ... for standard process specificationFast Prototype:with 24 hours delivery for double side pcb, with 48 hour s for four layer pcb, 72 hours delivery for ...