Multilayer flexible circuit board

Multilayer flexible circuit board with FR4 stiffened. PI + FR4 material with yellow coverlay. copper thickness 0.5oz inner layer and 1oz outer finished. Total board thickness is 1.6mm. The minimum track / spacing is 0.10 / 0.10mm. surface finished is Immersion gold 3U".  Bottom side with FR4 stiffened.
The characteristic of the Flex board is easy to bend, which is widely used in the instrument. 

We can provide 1-12 layers of flexible board, rigid-flexible board, flexible with all kinds of(like FR4, PI) stiffened.