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 |
 |
 |
 |
| 41 Construction of buildings |  |  |  |
| 41.1 Development of building projects |  |  |  |
| 41.10 Development of building projects |  |  |  |
| 41.2 Construction of residential and non-residential buildings |  |  |  |
| 41.20 Construction of residential and non-residential buildings |  |  |  |
| 41.20/1 Construction of commercial buildings |  |  |  |
| 41.20/2 Construction of domestic buildings |  |  |  |
| 42 Civil engineering |  |  |  |
| 42.1 Construction of roads and railways |  |  |  |
| 42.11 Construction of roads and motorways |  |  |  |
| 42.12 Construction of railways and underground railways |  |  |  |
| 42.13 Construction of bridges and tunnels |  |  |  |
| 42.2 Construction of utility projects |  |  |  |
| 42.21 Construction of utility projects for fluids |  |  |  |
| 42.22 Construction of utility projects for electricity and telecommunications |  |  |  |
| 42.9 Construction of other civil engineering projects |  |  |  |
| 42.91 Construction of water projects |  |  |  |
| 42.99 Construction of other civil engineering projects n.e.c. |  |  |  |
| 43 Specialised construction activities |  |  |  |
| 43.1 Demolition and site preparation |  |  |  |
| 43.11 Demolition |  |  |  |
| 43.12 Site preparation |  |  |  |
| 43.13 Test drilling and boring |  |  |  |
| 43.2 Electrical, plumbing and other construction installation activities |  |  |  |
| 43.21 Electrical installation |  |  |  |
| 43.22 Plumbing, heat and air-conditioning installation |  |  |  |
| 43.29 Other construction installation |  |  |  |
| 43.3 Building completion and finishing |  |  |  |
| 43.31 Plastering |  |  |  |
| 43.32 Joinery installation |  |  |  |
| 43.33 Floor and wall covering |  |  |  |
| 43.34 Painting and glazing |  |  |  |
| 43.34/1 Painting |  |  |  |
| 43.34/2 Glazing |  |  |  |
| 43.39 Other building completion and finishing |  |  |  |
| 43.9 Other specialised construction activities n.e.c. |  |  |  |
| 43.91 Roofing activities |  |  |  |
| 43.99 Other specialised construction activities n.e.c. |  |  |  |
| 43.99/1 Scaffold erection |  |  |  |
| 43.99/9 Specialised construction activities (other than scaffold erection) n.e.c. |  |  |  |