Printed circuit board supplier, pcb manufacturer in china

　　Material:  FR4 TG180

　　Thickness: 0.032in / 0.8mm

　　Layers:  4L

　　Outer Layer Copper Thickness:  1oz

　　Inner Layer Copper Thickness:  1oz

　　Soldermask: Both Sides, Green

　　Silkscreen: Both Sides, White

　　Conformal Coating:  Both Sides, Clear

　　Vias: All thru, plated.

　　Product Description

　　FINISH: THIS BOARD SHALL BE IMMERSION GOLD PLATED ACCORDING TO IPC-6012.  THICKNESS SHALL BE .050uM OVER 3-6uM NICKEL.   

　　COPPER PLATE HOLES MINIMUM .025 AVG, .020 MIN.. HOLES MAY NOT BE PLUGGED 

　　Pack with colorless transparent bubble film ,25 PCS/ bag, put desiccant in flank, put humidity indicator card on top side 

　　Layer structure 

　　-     PP 0.234mm  - 

　　-                 - 

　　-  CORE 0.127mm - 

　　-                 - 

　　-    PP  0.234mm  -