Businesses involved in the the following industries (as defined by the SIC Codes 2007) can use the ProQuin product as defined in the table below.
| Options |
 |
 |
 |
| 20 Manufacture of chemicals and chemical products |  |  |  |
| 20.1 Manufacture of basic chemicals, fertilisers and nitrogen compounds, plastics and synthetic rubber in primary forms |  |  |  |
| 20.11 Manufacture of industrial gases |  |  |  |
| 20.12 Manufacture of dyes and pigments |  |  |  |
| 20.13 Manufacture of other inorganic basic chemicals |  |  |  |
| 20.14 Manufacture of other organic basic chemicals |  |  |  |
| 20.15 Manufacture of fertilisers and nitrogen compounds |  |  |  |
| 20.16 Manufacture of plastics in primary forms |  |  |  |
| 20.17 Manufacture of synthetic rubber in primary forms |  |  |  |
| 20.2 Manufacture of pesticides and other agrochemical products |  |  |  |
| 20.20 Manufacture of pesticides and other agrochemical products |  |  |  |
| 20.3 Manufacture of paints, varnishes and similar coatings, printing ink and mastics |  |  |  |
| 20.30 Manufacture of paints, varnishes and similar coatings, printing ink and mastics |  |  |  |
| 20.30/1 Manufacture of paints, varnishes and similar coatings, mastics and sealants |  |  |  |
| 20.30/2 Manufacture of printing ink |  |  |  |
| 20.4 Manufacture of soap and detergents, cleaning and polishing preparations, perfumes and toilet preparations |  |  |  |
| 20.41 Manufacture of soap and detergents, cleaning and polishing preparations |  |  |  |
| 20.41/1 Manufacture of soap and detergents |  |  |  |
| 20.41/2 Manufacture of cleaning and polishing preparations |  |  |  |
| 20.42 Manufacture of perfumes and toilet preparations |  |  |  |
| 20.5 Manufacture of other chemical products |  |  |  |
| 20.51 Manufacture of explosives |  |  |  |
| 20.52 Manufacture of glues |  |  |  |
| 20.53 Manufacture of essential oils |  |  |  |
| 20.59 Manufacture of other chemical products n.e.c. |  |  |  |
| 20.6 Manufacture of man-made fibres |  |  |  |
| 20.60 Manufacture of man-made fibres |  |  |  |