1
Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry; unprocessed artificial resins, unprocessed plastics; manures; fire extinguishing compositions; tempering and soldering preparations; chemical substances for preserving foodstuffs; tanning substances; adhesives used in industry.
gases, in compressed, liquid or dissolved form, namely, industrial application gases in the nature of protective and active gases, welding, burning, cutting and shielding gases, process, treatment and operating gases, namely, nitrogen, oxygen, saturated and unsaturated hydrocarbon gases, hydrocarbon compounds, noble gases, namely, helium, neon, argon, krypton, and xenon, hydrogen, carbon dioxide, carbon monoxide, and specialty gases, namely, nitrogen, helium, carbon dioxide, synthetic air, hydrogen argon, oxygen and gas mixtures consisting of hydrogen in nitrogen, methane in argon, hydrogen in helium, methane in argon and other gas mixtures of all of the aforesaid gases; cryogenic liquid atmospheric gases for industrial, commercial, and scientific purposes in chilling and freezing
42
Scientific and technological services and research and design relating thereto; industrial analysis and research services; design and development of computer hardware and software
technical services of experts or engineers in the fields of chemistry and petrochemistry, process engineering, environmental and cryo-technology, and industrial gas application technology, namely, the services of customized planning and design of air separation plants, liquid natural gas and natural gas processing plants, hydrogen and synthesis gas plants, petrochemical plants, adsorption and membrane plants, cryogenic plants, carbon dioxide plants, and furnaces, fired heaters, and incinerators in all of the aforesaid fields; engineering services in relation to the generation, handling, and storage of gases and chemicals, in particular in relation to industrial application and process gases and chemicals