What is min thickness for FR4 rigid board?

We know ,most of the rigid PCB thickness is 1.6mm.however,we offer many different thickness for your designs.For FR4 board,below thickness is avaible ,0.2mm,0.4mm,0.6mm,0.8mm,1.0mm,1.2mm,1.4mm,1.6mm,2.0mm,2.4mm,3.0mm,3.2mm. the min thickness we made is 0.2mm.this is also the min thicnkess for FR4 material supplier can offer.

FPC (flex board) is around 0.15-0.2mm. 0.2mm rigid board looks like a flex board,but it can not bend like fpc.