JLC are telling us that flex pcbs need min 0.15mm soldermask opening.  This is not written on the capabilities page anywhere in the english version (chinese refs it a bit, [https://www.jlc.com/portal/vtechnology.html](https://www.jlc.com/portal/vtechnology.html) ). I can't see how it would be checked on easyeda pro with DRC settings.  Note - this is different to soldermask expansion - I am talking about soldermask opening - as shown by green arrow below.  . <br> <br> Ideas?  Thanks all!