"Polyester resin products manufacturing process" means a manufacturing process that fabricates or reworks products for commercial, military or industrial use by mixing, pouring, hand laying-up, impregnating, injecting, pultruding, forming, winding, spraying, and/or curing by using unsaturated polyester resin materials with fiberglass, filters, or any other reinforcement materials.
Ill. Admin. Code tit. 35, § 211.4850
Added at 18 Ill. Reg. 1253, effective January 18, 1994