| 273 | 비산먼지 발생사업장 변경신고 대관용역 | (유)토석산업 | (유)토석산업 | 2025.01 |
| 284 | 사이클론 로터리밸브 임펠라 교체 | (주)S.F.C | 여수 | 2025.04 |
| 29 | Cyclone production | Daeil E&C | Daeil E&C | 2015.12 |
| 207 | Pickling scrubber replacement and cleaning | SM Steel Co., Ltd. | SM Steel Co., Ltd. | 2022.09 |
| 220 | Waterworks facility electric valve replacement work | Gunsan City Waterworks Office | Gunsan City Waterworks Office | 2022.12 |
| 243 | Installation of domestic water supply filter | Tata Daewoo Commercial Vehicle Co., Ltd. | Tata Daewoo Commercial Vehicle Co., Ltd. | 2024.01 |
| 248 | 생활용수 공급필터 설치공사 | Techcross Environmental Services Co., Ltd. | Techcross Environmental Services Co., Ltd. | 2024.03 |
| 37 | Performance improvement design and test operation. | HiNTech Co., Ltd. | Hyocheon Sewage Treatment Plant | 2018. 07 |
| 33 | Performance improvement design and test run thalliac piping work | HiNTech Co., Ltd. | Gwangju Sewage Treatment Plant | 2018. 04 |
| 131 | Cleaning dust collection facility installation work (250㎥/min) | Sungjin Polymer Co., Ltd. | Sungjin Polymer Co., Ltd. | 2021.04 |
| 216 | Cleaning dust collector and filter dust collector improvement work (12 sets) | Korea Glass Industry Co., Ltd. | Korea Glass Industry Co., Ltd. | 2022.11 |
| 174 | Car wash wastewater discharge facility repair work | Seocheon Fire Station | Seocheon Fire Station | 2022.04 |
| 98 | Digestion gas desulfurization machine (M-1052) repair | Techcross Environmental Service Co., Ltd. | Techcross Environmental Service Co., Ltd. | 2020.06 |
| 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 |
| 138 | Digestion tank transfer pipe repair work | Gunsan Sewage Treatment Plant | Gunsan Sewage Treatment Plant | 2021.06 |
| 146 | Digester B series concentrated sludge supply pipe replacement | Techcross Environmental Service Co., Ltd. | Techcross Environmental Service Co., Ltd. | 2021.08 |
| 24 | Blower motor replacement and pulley manufacturing | Korea Mold | Korea Mold | 2015. 09 |
| 153 | Blower balancing & bearing and belt replacement | 3AC Co., Ltd. | 3AC Co., Ltd. | 2021.10 |
| 183 | Blower maintenance work | DS Timber Co., Ltd. | DS Timber Co., Ltd. | 2022.05 |
| 8 | Blower relocation work | SalePS | SalePS | 2014. 06 |
| 189 | Scrava repair, polling and demister replacement work | Daeil Precision Co., Ltd. | Daeil Precision Co., Ltd. | 2022.05 |
| 164 | Scrava repair work | Iljin Steel Co., Ltd. | Iljin Steel Co., Ltd. | 2022.01 |
| 43 | Scrava manufacturing and installation work | Hanmi Tech | Gunsan Sewage Treatment Plant | 2018. 11 |
| 191 | Scrava polling replacement work | Danseok Industrial Co., Ltd. Gunsan Factory 1 | Danseok Industry Co., Ltd. | 2022.06 |
| 201 | Scrava polling delivery | Danseok Industrial Co., Ltd. Gunsan Factory 1 | Danseok Industrial Co., Ltd. Gunsan Factory 1 | 2022.07 |
| 271 | 슬래그 파쇄장 집진기 긴급 개선공사 | SeAH Besteel | Gunsan | 2024.12 |
| 262 | 슬러지펌프 교체&보수 | 에이치엘만도 주식회사 | 익산 | 2024.09 |
| 57 | New wastewater treatment plant installation work | farmers food | Jongcheon Agricultural and Industrial Complex | 2019. 06 |
| 204 | Shinpung pressurization plant piping equipment repair | Gunsan City Waterworks Office | Shinpung pressurization plant | 2022.08 |
| 205 | Laboratory sink plumbing repair work | Tata Daewoo Commercial Vehicles Ltd. | Tata Daewoo Commercial Vehicles Ltd. | 2022.08 |
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