Some time ago, a journalist tried to mock ex-PM Dacias Ciolos for wearing a certain hat (indirect source):
Journalist Costi Rogozanu wrote on Facebook that the price of a hat similar to the one worn by Dacian Ciolos during the protest on Sunday is EUR 42.95.
The price tag is presented to indicate that the hat is quite expensive (to Romanian standards, of course).
Sweedish Embassy in Bucharest recognized the hat and promoted it in a Facebook post:
It’s a Swedish Fjällräven hat! (...) If you fancy this garment, follow this link: (...)
Many Facebook commentators appreciated this way of promoting country products, but some considered that it is not appropriate for an Embassy to advertise private companies products like this.
Question: Is any diplomatic rule violated if an embassy promotes private companies brands (from respective country)?