| 252 | 군산공공하수처리장 1차침전지 악취방지시설 설치 기계설비공사(탈취기) | 군사시수도사업소 | 군사시 하수처리장 | 2024.05 |
| 72 | Agricultural Life Center restaurant cooling and heating system installation work | National Youth Training Center | National Youth Training Center | 2019. 12 |
| 58 | Installation of automatic polymer dissolution device in the dehydrator room of the second treatment facility | HiNTech Co., Ltd. | Guri Sewage Treatment Plant | 2019. 08 |
| 33 | Performance improvement design and test run thalliac piping work | HiNTech Co., Ltd. | Gwangju Sewage Treatment Plant | 2018. 04 |
| 140 | Glass shop wastewater treatment equipment | Gwangyeoldang | Gwangyeoldang | 2021.06 |
| 46 | Manufacturing and installation of iron manganese removal equipment | GNS Engineering | gongju | 2018. 11 |
| 168 | Public wastewater treatment plant pressurized flotation filter media replacement work | Changjin Co., Ltd. | public wastewater treatment plant | 2022.02 |
| 285 | 환경기초시설 통합환경허가 변경 용역 | 고창군청 | 고창 | 2025.04 |
| 71 | Purchase of Godeok wastewater treatment plant inflow distribution channel bypass piping cover | Pyeongtaek City Hall | Godeok Wastewater Treatment Plant | 2019. 12 |
| 173 | Gyeongsan Industrial Complex Environmental Management Center Integrated Environmental Permit | Gyeongsan City Hall | Gyeongsan Industrial Complex | 2022.04 |
| 267 | 600L급 바이오수소 생산 공정 설계 | SK에코플랜트 | SK에코플랜트 | 2024.10 |
| 188 | Production and installation of local exhaust facilities, air quality permit, hazardous risk prevention plan | PH Energy | PH Energy | 2022.05 |
| 250 | 백필터 설치공사 (200CMM*2SET) | LX 글라스 | LX 글라스 | 2024.04 |
| 70 | A/C TOWER repair work | E&S Tech Co., Ltd. | LG Household & Health Care | 2019. 12 |
| 14 | Fume dust collector installation work | L J Industries | L J Industries | 2015. 01 |
| 130 | Centrifugal force dust collection equipment installation work (180㎥/min) | Good wood | Good wood | 2021.04 |
| 31 | Manufacturing and installation of backwash equipment | GNS Engineering | Gongju | 2018.02 |
| 248 | 생활용수 공급필터 설치공사 | Techcross Environmental Services Co., Ltd. | Techcross Environmental Services Co., Ltd. | 2024.03 |
| 246 | 침사&협잡물 호퍼 보수공사 | Techcross Environmental Services Co., Ltd. | Techcross Environmental Services Co., Ltd. | 2024.03 |
| 197 | Digestion tank A~C series primary digestion sludge extraction piping improvement work | Techcross Environmental Services Co., Ltd. | Techcross Environmental Services Co., Ltd. | 2022.07 |
| 198 | Activated carbon and filter replacement | Woosuk Engineering Co., Ltd. | Woosuk Engineering Co., Ltd. | 2022.07 |
| 276 | 대기배출시설 인허가 대관용역 | (주)오미아코리아 | (주)오미아코리아 | 2025.02 |
| 189 | Scrava repair, polling and demister replacement work | Daeil Precision Co., Ltd. | Daeil Precision Co., Ltd. | 2022.05 |
| 201 | Scrava polling delivery | Danseok Industrial Co., Ltd. Gunsan Factory 1 | Danseok Industrial Co., Ltd. Gunsan Factory 1 | 2022.07 |
| 191 | Scrava polling replacement work | Danseok Industrial Co., Ltd. Gunsan Factory 1 | Danseok Industry Co., Ltd. | 2022.06 |
| 192 | Waste super refrigerant coagulation reaction tank FRP coating, etc. | Dasong Kister Co., Ltd. | Dasong Kister Co., Ltd. | 2022.06 |
| 273 | 비산먼지 발생사업장 변경신고 대관용역 | (유)토석산업 | (유)토석산업 | 2025.01 |
| 129 | Centrifugal force dust collection equipment installation work (250㎥/min) | Taejin Wood Co., Ltd. | Taejin Wood Co., Ltd. | 2021.04 |
| 126 | Centrifugal force dust collector installation work (300㎥/min) | Taesung Wood Co., Ltd. | Taesung Wood Co., Ltd. | 2021.03 |
| 180 | Air, noise and vibration approval | Baeksan Wood Co., Ltd. | Baeksan Wood Co., Ltd. | 2022.05 |
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