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|This is a main category requiring frequent diffusion and maybe maintenance. As many pictures and media files as possible should be moved into appropriate subcategories.|
This category has the following 10 subcategories, out of 10 total.
- ► Household chemicals (2 C, 4 F)
- ► Ions (13 C, 1 P, 46 F)
- ► PTFE (1 C, 1 F)
- ► Radicals (12 C, 80 F)