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 |
 |
 |
 |
| 23 Manufacture of other non-metallic mineral products |  |  |  |
| 23.1 Manufacture of glass and glass products |  |  |  |
| 23.11 Manufacture of flat glass |  |  |  |
| 23.12 Shaping and processing of flat glass |  |  |  |
| 23.13 Manufacture of hollow glass |  |  |  |
| 23.14 Manufacture of glass fibres |  |  |  |
| 23.19 Manufacture and processing of other glass, including technical glassware |  |  |  |
| 23.2 Manufacture of refractory products |  |  |  |
| 23.20 Manufacture of refractory products |  |  |  |
| 23.3 Manufacture of clay building materials |  |  |  |
| 23.31 Manufacture of ceramic tiles and flags |  |  |  |
| 23.32 Manufacture of bricks, tiles and construction products, in baked clay |  |  |  |
| 23.4 Manufacture of other porcelain and ceramic products |  |  |  |
| 23.41 Manufacture of ceramic household and ornamental articles |  |  |  |
| 23.42 Manufacture of ceramic sanitary fixtures |  |  |  |
| 23.43 Manufacture of ceramic insulators and insulating fittings |  |  |  |
| 23.44 Manufacture of other technical ceramic products |  |  |  |
| 23.49 Manufacture of other ceramic products |  |  |  |
| 23.5 Manufacture of cement, lime and plaster |  |  |  |
| 23.51 Manufacture of cement |  |  |  |
| 23.52 Manufacture of lime and plaster |  |  |  |
| 23.6 Manufacture of articles of concrete, cement and plaster |  |  |  |
| 23.61 Manufacture of concrete products for construction purposes |  |  |  |
| 23.62 Manufacture of plaster products for construction purposes |  |  |  |
| 23.63 Manufacture of ready-mixed concrete |  |  |  |
| 23.64 Manufacture of mortars |  |  |  |
| 23.65 Manufacture of fibre cement |  |  |  |
| 23.69 Manufacture of other articles of concrete, plaster and cement |  |  |  |
| 23.7 Cutting, shaping and finishing of stone |  |  |  |
| 23.70 Cutting, shaping and finishing of stone |  |  |  |
| 23.9 Manufacture of abrasive products and non-metallic mineral products n.e.c. |  |  |  |
| 23.91 Production of abrasive products |  |  |  |
| 23.99 Manufacture of other non-metallic mineral products n.e.c. |  |  |  |