S.L. 33.3 ст. 10Casing.

(1) No material other than paper and cardboard shall be used as casing for ground, rooftop or terrace fireworks.

(2) No material other than paper and cardboard shall be used as casing for aerial fireworks, which exceed 9.5 centimetres in length and 9.5 centimetres in diameter.

(3) In all cases the use of any kind of metallic casings shall be prohibited.