7 Descaling machines; machine tools; engines [except for land vehicles]; machine couplings and power transmission components, except for land vehicles; agricultural implements, other than manual hand tools; compressors for refrigerating apparatus and installations; equipment, apparatus and machines for the treatment of surfaces; equipment, apparatus and machines for sandblasting; equipment, apparatus and machines for grinding; equipment, apparatus and machines for applying paint and coatings to surfaces; equipment, apparatus and machines for spray painting; equipment, apparatus and machines for high-pressure washing; compressed air tools, compressed air compressors; couplings and devices for transmission of motive power (except for land vehicles); pumps and pump systems and installations, including pumps and pump systems and installations for dosing and circulating chemicals and liquids; spraying machines; sprayers, namely, sprayers for dosing, circulating and applying chemicals for cleaning ships, boats, bulk carriers, storage tanks, septic tanks, fuel tanks and cargo tanks; machines for cleaning ships, boats, bulk carriers, storage tanks, septic tanks, fuel tanks and cargo tanks; sandblasting machines; high pressure washers; spray lances for attachment to high-pressure washing machines for cleaning purposes; parts and accessories for all the aforementioned goods