Chemicals used in hydrocarbon production, storage and transmission, namely, chemical solutions used to disperse paraffin and asphaltene sludge formations in oil wells, hydrocarbon storage vessels, pipelines and other tubing through which hydrocarbons pass; chemicals for degreasing and descaling

Chemicals used in hydrocarbon production, storage and transmission, namely, chemical solutions used to disperse paraffin and asphaltene sludge formations in oil wells, hydrocarbon storage vessels, pipelines and other tubing through which hydrocarbons pass