ROHS.
![Double-sided pcb with green soldermask.SD card motherboard.china pcb manufacturer](http://img.hisupplier.com/var/userImages/2013-05%2F22%2F153204825232.jpg)
Advantages:
*Our company was established in 1996,which is engaged in printing circuit board production. It have long history.
*We have our own factory and equipped with advanced circuit board production line.the digital control drilling machine,optical painting equipment,exposing machine,developing machine and so on. It can produce a high-quality PCB production.
*Enjoying high reputation in this line.
*Effective management to make every member can do their best for the customer.
Technical Information:
*Materials: FR-4, CEM-1, aluminum,
*Finish board thickness: 0.2 to 3.2mm
*External copper thickness: 35 to 210um
*Internal copper thickness: 17 to 140um
*Copper plating hole: 18 to 40um
*Trace width and line spacing: 0.075/0.1mm (3/4 mils)
*CNC hole diameter: 0.20mm (minimum)
*Punching hole diameter: 0.9mm (35 mils) (minimum)
*Panel size: 610 x 508mm (maximum)
*Hole position tolerance: 0.075mm
*Hole dimension tolerance: 0.075 (PTH) and 0.05mm (NPTH)
*Outline tolerance: 0.125 (CNS) and 0.15mm (punching)
*Warp and twist: 0.70%
*Solder mask bridge: 0.0635mm (minimum)
*Distance between lines to board bridge: 0.25 (minimum) (outline) and 0.40mm (v-cut)
*Impedance control tolerance: ±10%
*Test voltage: 10 to 300V
*Solder mask types: green, yellow, red, white, blue, matte green, matte black and more
*Surface finished: HASL, immersion gold, immersion silver, gold-plated, gold finger and OSP