I thought the main legal framework in Italy would have been related to the TPD. The main implication here in the UK since the implentation of the TPD is restrictions on the supply of nicotine, but the short-fill market has exploded and actually driven down the cost of eliquids (on the whole).

Short-fills sit outside of the scope of the TPD, which is why that sector of the industry has boomed here in the last year or two.
Are you saying that short-fills have been heavily taxed there?