Got the following from the yellow pages. Hope it helps...
FIREWORKS ACT - Shop 7, 53 Wollongong St, Fyshwick(02) 6280 7676
www.actfireworks.com.au
The Fireworks King, Unit 15, 57-63 Wollongong St, Fyshwick, 2609, 1800 465 464
Red-back Fireworks, 1/80 Newcastle St, Fyshwick, 1800 002 112
KC'S Fireworks, 1 Smith St, Queanbeyan 2620, Mobile: 0427 438 607