commercial affairs, namely, procuring of contracts for the purchase and sale of greenhouse and tunnel plastic covers, mulch plastic films, soil fumigation tarps, silage plastic, silage bale wrap, grain and forage bags, pond liner, geomembrane, agricultural twine, baler twine, ground-covers and other agricultural nets; commercial administration of the licensing of greenhouse and tunnel plastic covers, mulch plastic films, soil fumigation tarps, silage plastic, silage bale wrap, grain and forag...