RCW 70.77.138: Definitions—"Articles pyrotechnic."

"Articles pyrotechnic" means pyrotechnic devices for professional use similar to consumer fireworks in chemical composition and construction but not intended for consumer use which meet the weight limits for consumer fireworks but which are not labeled as such and which are classified as UN0431 or UN0432 by the United States department of transportation at 49 C.F.R. Sec. 172.101 as of June 13, 2002.