| No. | Date | Production/ Construction Name | Place of order |
|---|---|---|---|
| 8 | 2019.04 | Repair of outflow floodgate in UV sterilization tank | Environmental corporation of Gwangju |
| 7 | 2019.01 | Repair of rotary valve | Environmental corporation of Gwangju |
| 6 | 2019.01 | Production of the stem nut for facility maintenance | Environmental corporation of Gwangju |
| 5 | 2018.11 | Repair, production, & installation of auto gate valve and contaminated water floodgate | Environmental corporation of Gwangju |
| 4 | 2018.11 | Production of strainer filter | Environmental corporation of Gwangju |
| 3 | 2018.11 | Repair of safety handrail outdoor | Environmental corporation of Gwangju |
| 2 | 2018.09 | Repair & installation of bearing & motor | Environmental corporation of Gwangju |
| 1 | 2018.09 | Production of spare parts for crusher machine | Environmental corporation of Gwangju |
