PCB BOARD 1.FR4 1OZ 4layer 2.GREEN*2 WHITE*1 3 IMMERSION GOLD PCB BOARDLAYER:1-12BOARD MATERIAL:FR- ... GOLD,OSPSOLDER MASK COLOR:GREEN,BLUE,BLACK,WHITE,REDTECHNNOLOGY:BLOCK,BGA,PEELABLE,CARBONINKLEGEND COLOR:WHITE,BLACK,YELLOW,GREEN,CERTIFICATE:UL,ROHS,ISO9001 ... ,T/S 16949ASSEMBLY:LEDA FREE,NOT LEAD FREE Shenzhen TW PCB BOARD