Chemicals used in the manufacture of spray packaged components, namely an aerosol propellant for a metered dose inhaler

chemicals used in industry as refrigerants and cooling agents in the industries of manufacture and maintenance of heating, ventilating, refrigerating and cooling, and air conditioning equipment; chemicals used as solvents in chemical manufacturing industry and in the manufacture of spray packaged components; chemicals used in industry as blowing agents for use in the manufacture of foamed plastics