| No. | Date | Production/ Construction Name | Place of order |
|---|---|---|---|
| 18 | 2020.04 | Production and purchase of fine & superfine screen driving shaft | Environmental corporation of Gwangju |
| 17 | 2020.03 | Installation of conveyor belt | SM BURE co.,Ltd |
| 16 | 2020.03 | Improvement in outdoor storage tank discharge facility in sewage sludge recycling plant | Environmental corporation of Gwangju |
| 15 | 2020.02 | Production of parts of the 1-step final settling sludge collector reducer | Environmental corporation of Gwangju |
| 14 | 2020.02 | Repair, production & installation of reducer | Environmental corporation of Gwangju |
| 13 | 2019.12 | Processing of surplus sludge pump shaft in the initial settling zone of the 1st sewage treatment plant | Environmental corporation of Gwangju |
| 12 | 2019.11 | Installation of safety handrail in the settling zone with sloped plates | Environmental corporation of Gwangju |
| 11 | 2019.08 | Production & installation of overbridge in digestion tank | Environmental corporation of Gwangju |
| 10 | 2019.06 | Production of the cart for high-pressure washer | Environmental corporation of Gwangju |
| 9 | 2019.05 | Repair of the 2-step initial settling sludge collector in sewage treatment plant | Environmental corporation of Gwangju |
