category F4: fireworks which present a high hazard, which are intended for use only by persons with specialist knowledge (commonly known as fireworks for professional use) and whose noise level is not harmful to human health.
F4-kategooria: kõrge ohutasemega ilutulestikud, mida võivad kasutada üksnes erialaste teadmistega isikud (tavanimetusega „professionaalseks kasutamiseks ettenähtud ilutulestikud”) ja mille müratase ei kahjusta inimese tervist;