| 48 | 12 cases including odor prevention facility repair work | HiNTech Co., Ltd. | Pyeongtaek Godeok Sewage Treatment Plant | 2018. 12 |
| 77 | Production of odor reduction facilities | CP Co., Ltd. | CP | 2019. 12 |
| 141 | Glass shop wastewater treatment equipment | Seawell Optician | Seawell Optician | 2021.06 |
| 140 | Glass shop wastewater treatment equipment | Gwangyeoldang | Gwangyeoldang | 2021.06 |
| 66 | Anseong Juksan sewage treatment facility sedimentation tank installation work | Samheung G&G Co., Ltd. | Juksan Sewage Treatment Plant | 2019.10 |
| 103 | Chemical piping installation work | Hanil Systems Co., Ltd. | Hanil Systems | 2020. 07 |
| 83 | Chemical tank and pump installation work | Segi Energy Co., Ltd. | Korea Securit | 2020. 02 |
| 105 | Chemical tank protective wall installation and piping work | Techcross Environmental Service Co., Ltd. | Techcross Environmental Service Co., Ltd. | 2020. 07 |
| 82 | Chemical tank piping installation | Gyeongjin Industry | Pyeongtaek Wastewater Treatment Plant | 2020. 02 |
| 152 | Chemical tank installation work | Dio Electronics Co., Ltd. | Dio Electronics Co., Ltd. | 2021.09 |
| 19 | Chemical tank installation and FRP lining | Dio Electronics | Dio Electronics | 2015. 04 |
| 45 | Chemical tank installation and plumbing work | Samho Chemssana Co., Ltd. | Samho Chemssana Co., Ltd. | 2018. 11 |
| 99 | Chemical tank installation work | Handok C&C | Handok C&C | 2020. 06 |
| 78 | Chemical pump valve installation | Handok C&C | Daesang Bio | 2019. 12 |
| 120 | Chemical pump installation service | Minseong Industry | Minseong Industry | 2021.01 |
| 115 | Eoeun Sewage Treatment Plant Repair Work | Techcross Environmental Service | Eoeun Sewage Treatment Plant | 2020.12 |
| 151 | Air dryer installation work | Woosuk Engineering Co., Ltd. | Woosuk Engineering Co., Ltd. | 2021.09 |
| 277 | 에코앤드림 집진기덕트 라인 배관 공사 | (주)웅비기계 | Gunsan | 2025.03 |
| 259 | 엔진연구동 냉각수공급펌프교체 및 배관 수정공사 | (유)이레산업 | Gunsan | 2024.07 |
| 28 | Filter installation work | Korea Marine Environment Management Corporation Gunsan Branch | Korea Marine Environment Management Corporation Gunsan Branch | 2015.12 |
| 142 | Delivery and installation of filters, dehydrators, chemical pumps, etc. | Farmers Food Co., Ltd. | Farmers Food Co., Ltd. | 2021.07 |
| 179 | Filtered water supply pump joint work | Techcross Environmental Service Co., Ltd. | Techcross Environmental Service Co., Ltd. | 2022.04 |
| 200 | Bag filter maintenance and dust collector repair | Korea Glass Industry Co., Ltd. | Korea Glass Industry Co., Ltd. | 2022.07 |
| 212 | Improvement of the filtration dust collector environment (4set) | Korea Glass Industry Co., Ltd. | Korea Glass Industry Co., Ltd. | 2022.10 |
| 206 | Filter dust collector environmental improvement/large dust collector, cleaning dust collector maintenance | Korea Glass Industry Co., Ltd. | Korea Glass Industry Co., Ltd. | 2022.08 |
| 132 | Filtration dust collection facility installation work (150㎥/min) | GS Metal | GS Metal | 2021.04 |
| 134 | Filtration dust collection facility installation work (300㎥/min) | Daishin Renewable Industry | Daishin Renewable Industry | 2021.05 |
| 136 | Filtration dust collection facility installation work (400㎥/min) | Gunjang recycling cycle | Gunjang recycling cycle | 2021.05 |
| 59 | Filtration tank installation work | Kangsan E&C | Gunsan Wolmyeong Swimming Pool | 2019.09 |
| 31 | Manufacturing and installation of backwash equipment | GNS Engineering | Gongju | 2018.02 |
English 
한국어