| | | | 516 | Other machinery and
equipment, and related
products | Equipment and related
products 51 |
| | | | 517 | Cleaning services for
agricultural, industrial,
commercial, and service
industry machinery and
equipment | Equipment and related
products 51 |
| | | | 541 | Outright sale of rights
to intellectual property
works | Intellectual property and
related products 54 |
| | | | 542 | Licensing of rights to
use intellectual property | Intellectual property and
related products 54 |
| | | | 543 | Research and development
services | Intellectual property and
related products 54 |
| | | | 544 | Artistic and literary
intellectual property
protected by copyright
produced under contract | Intellectual property and
related products 54 |
| | | | 545 | Products related to
intellectual property | Intellectual property and
related products 54 |
| | | | 571 | Labor supply and related
products, except human
resources management
consulting services | Labor supply and related
products, except human
resources management
consulting services 57 |
| | | | 611 | Fuels and electricity for
heat, power, and
transportation, and
related products | Fuels, utilities, waste
management, and
environmental remediation
services, and related
products and services 61 |
| | | | 612 | Water, sewer, and
environmental services | Fuels, utilities, waste
management, and
environmental remediation
services, and related
products and services 61 |
