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| Company Name | County | Tel: No. |
| Okay Engineering Services Ltd. | Leicestershire | 01858-465049 |
| Olympic Conveyor Services Ltd. | Cornwall | 01726-61141 |
| On Line Conveyors Ltd. | Gloucestershire | 01452-307085 |
| Opus Scotland Ltd. | Ayrshire | 01294-604335 |
| Owens Conveyor | West Midlands | 01922-452333 |