1 Inorganic materials | |
| M-10 Steels and ferrous materials | |
| M-12 Non-ferrous metals and alloys | |
| M-15 Precious metals | |
| M-16 Non-metallic inorganic materials | |
| | M-160 | Ceramics | |
| | M-161 | Glass | |
| M-19 Other inorganics | |
2 Organic materials | |
3 Materials for product operation | |