Do they use coding sheets and BIC Cristal for Her?
The reviews are worth a read if you haven't already encountered them.
https://www.amazon.com/BIC-Cristal-1-0mm-Black-MSLP16-Blk/product-reviews/B004F9QBE6
The reviews are worth a read if you haven't already encountered them.
https://www.amazon.com/BIC-Cristal-1-0mm-Black-MSLP16-Blk/product-reviews/B004F9QBE6