Recently, the Chengdu Municipal National Defense Mobilization Office (Chengdu NMDO) officially announced that the hydrodynamic automatic flood barrier developed by Junli, installed in the local civil air defense (CAD) projects, has passed the completion acceptance inspection. In the water tightness test, the barrier demonstrated rapid activation, tight closure, and remarkable flood-blocking performance.
Combat-Proven Flood Protection for Civil Air Defense Projects
As a star product in the field of flood control for civil air defense projects, Junli’s hydrodynamic automatic flood barrier has been applied in the NMDO systems of multiple cities across China. Having withstood the test of actual flood-fighting scenarios, it has delivered a faultless safety record and earned consistent praise from NMDOs nationwide.
Wuxi Jinkui Park Underground Garage: During a severe rainstorm, the barrier activated rapidly, successfully blocking floodwater intrusion and keeping the underground garage completely unaffected.
Suzhou Sanyuan No.1 Village Civil Air Defense Project: In heavy rainfall, the barrier automatically rose and held back water, effectively preventing rainwater backflow. It was highly commended by community residents and the then mayor.
Wuxi Ancient Canal Civil Air Defense Garage: The barrier successfully blocked water during intense downpours, ensuring no street water entered the garage, and won praise from property management and staff.
Nanjing No.13 Middle School Civil Air Defense Garage: It withstood the onslaught of rainstorms by successfully blocking floodwater.
Wuhan Civil Air Defense Project: When facing rainwater backflow, the flood barrier automatically floated up to retain water.
And many more successful cases…
Junli Co., Ltd.
Website: www.jlflood.com
Nanjing Junli Technology Co., Ltd. is a high-tech enterprise founded by military transferred cadres through independent entrepreneurship. It has obtained a series of qualification certifications, including Jiangsu Province Specialized, Refined, Characteristic and Novel Small and Medium-sized Enterprise, Jiangsu Province Technology-based Small and Medium-sized Enterprise, Nanjing Gazelle Enterprise, Nanjing Innovative Leading Enterprise, Nanjing Above-scale Enterprise, Nanjing Credit Management Demonstration Enterprise, and AAA-grade Credit Enterprise. It has also been recognized as the Nanjing Engineering Technology Research Center. Boasting over 100 independent intellectual property rights, the company takes the lead in formulating the national standard and group standard for Hydrodynamic Automatic Flood Barrier for Building Use. Its achievements have been recognized and recommended by two ministries and commissions, and included in three national standard atlases.
Hydrodynamic Automatic Flood Barrier
Core Technology: Driven purely by physical water buoyancy, it requires no electric power or manual operation. It automatically rises to block water when encountering flooding and resets automatically once the water recedes.
Honors & Certifications:
Passed the scientific and technological achievement appraisal organized by the State Civil Air Defense Office, with Academician Ren Huiqi of the Chinese Academy of Engineering serving as the director of the appraisal committee. The appraisal conclusion rated it as “reaching the leading domestic level” and “of great significance for ensuring the safe flood season of underground projects”, and awarded the Certificate of Scientific and Technological Achievement Appraisal.
Passed the scientific and technological achievement evaluation organized by the Ministry of Housing and Urban-Rural Development, with the evaluation conclusion stating it has “reached the international advanced level”, and obtained the Certificate of Scientific and Technological Achievement Evaluation in the Construction Industry.
Awarded the Certificate of Promotion of Scientific and Technological Achievements in the Construction Industry by the Ministry of Housing and Urban-Rural Development.
Selected into the Recommended List of Independent Equipment for China’s Urban Rail Transit.
Won the Special Mention Gold Medal at the Geneva International Exhibition of Inventions (only 3 projects from the Chinese delegation received this honor), the Second Prize of Jiangsu Provincial Construction Science and Technology Innovation Achievement, the First Prize of “Minimally Invasive and Minor Modification” Science and Technology Innovation Achievement for Urban Rail Transit by Jiangsu Civil Engineering and Architecture Society, the Excellent Award of Jiangsu Provincial Patent Project, the Nanjing Excellent Patent Award, and the Nanjing Innovative Product, among others.
Global Applications: Nearly 1,000 sets have been installed in civil air defense projects, underground garages, subways, substations and other projects worldwide. It has successfully blocked water nearly 100 times, achieving a 100% flood-blocking success rate.
Corporate Honors & Milestones
2026: Junli’s flood prevention solution was officially recognized by Chengdu Municipal National Defense Mobilization Office
2026: Junli’s flood prevention solution was reported by China National Defense News
2026: The company’s responsible person was invited to give a speech at the 1st Scientific and Technological Achievement Release Conference of the China Academy of Building Research
2025: The company’s responsible person was invited to give a speech at the 19th International Seminar on Urban Water Development
2025: The company’s responsible person was invited to participate in the Annual Summary Meeting of the National Key R&D Program Project
2025: The research team of Harbin Institute of Technology for the National Key R&D Program visited Junli for research
2025: The company’s responsible person was invited to give a speech at the 2025 Annual Exchange Meeting of the Resilient City Professional Committee of the China Association for Engineering Construction Standardization
2025: The company’s responsible person was invited to give a speech at the 2025 Annual Conference and Transportation Sustainable Development Forum of the Engineering Construction Committee of the China Urban Rail Transit Association
2025: The company’s responsible person was invited to give a speech at the 7th Green Underground Space Forum
2025: The company’s responsible person was invited to participate in the forum hosted by Xie Weijiang, Deputy Secretary of Hunan Provincial Party Committee and Secretary of Yueyang Municipal Party Committee
2025: Junli’s Hydrodynamic Automatic Flood Barrier for Building Use passed the acceptance inspection of Jiangsu Provincial Standardization Pilot Project
2025: The company’s responsible person was invited to give a speech at the 8th Academic Exchange Conference on Urban Water Safety and Water Management
2025: The company’s responsible person was invited to give a speech at the Inaugural Meeting of the Waterlogging Control Professional Committee of Jiangsu Sponge City Alliance
2025: The company’s responsible person was invited to participate in the Launching and Implementation Plan Demonstration Meeting of the National Key R&D Program Project
2025: The company’s responsible person was invited to give a speech at the 2025 Guangdong-Hong Kong-Macao Greater Bay Area Metro Industry Conference
2025: The company’s responsible person was invited to participate in the forum hosted by the governor and delivered a speech
2024: Awarded the Certificate of Promotion of Scientific and Technological Achievements in the Construction Industry (issued by the Ministry of Housing and Urban-Rural Development)
2024: Rated as “Jiangsu Provincial Specialized, Refined, Characteristic and Novel Small and Medium-sized Enterprise”
2024: Won the Excellent Organization Award of the 2nd Underground Space Science Popularization and Creative Competition (“Zhuofang Cup”)
2024: The product won the Third Prize of the 2nd Underground Space Science Popularization and Creative Competition (“Zhuofang Cup”)
2024: Won the First Prize of “Minimally Invasive and Minor Modification” Science and Technology Innovation Achievement for Urban Rail Transit Construction by Jiangsu Civil Engineering and Architecture Society
2024: Rated as Advanced Collective in Science and Technology Innovation (Urban Rail Transit) by Jiangsu Civil Engineering and Architecture Society
2024: The company’s responsible person was awarded the title of “Advanced Individual in Science and Technology Innovation of Urban Rail Transit by Jiangsu Civil Engineering and Architecture Society”
2024: Honored with the title of “Nanjing Innovative Product”
2023: The company’s responsible person was awarded the title of “Outstanding Young Engineer in Civil Engineering and Architecture in the Yangtze River Delta (Nomination Award)”
2023: The innovative product was selected into the “Recommended List of Independent Equipment for China’s Urban Rail Transit”
2023: Selected into the “Nanjing Construction Industry Science and Technology Plan” project
2023: Honored with the title of “Nanjing Innovative Product”
2022: Re-elected as “Nanjing Gazelle Enterprise”
2022: Passed the re-examination of “National High-tech Enterprise”
2022: Recognized as “Nanjing Engineering Technology Research Center”
2022: The company’s responsible person was selected as the third-level training object of the 6th “333 High-level Talent Training Project” in Jiangsu Province
2021: Selected as “Nanjing Above-scale Enterprise”
2021: Selected as a key cultivation enterprise of “Jiangsu High-quality Product”
2021: Won the “Nanjing Innovative Product Award”
2021: Won the “Excellent Case Award of Nanjing Standardization Activities”
2021: Won the Second Prize of Jiangsu Provincial Construction Science and Technology Innovation Achievement
2021: Selected into the “2021 Nanjing Innovative Leading Enterprise Cultivation Library”
2021: Honored with the title of “Nanjing Gazelle Enterprise”
2021: Won the Special Mention Gold Medal at the Geneva International Exhibition of Inventions
2020: Honored with the title of “Nanjing Credit Management Demonstration Enterprise”
2020: Honored with the title of “Contract-abiding and Trustworthy Enterprise”
2020: Won the “Nanjing Excellent Patent Award”
2020: Honored with the title of “Nanjing Intellectual Property Demonstration Enterprise”
2020: Obtained the “AAA-grade Credit Rating Certification”
2020: Obtained the ISO9001/14001/45001 system certification
2019: Passed the re-examination of “National High-tech Enterprise”
2019: Undertaken the Nanjing Patent Navigation Project
2019: Listed on the Jiangsu Sci-tech Innovation Board
2019: Won the Excellent Award of Jiangsu Provincial Patent Project
2018: Rated as “Jiangsu Provincial Intellectual Property Standardization Implementation Unit”
2018: Rated as “Nanjing Innovative Enterprise”
2018: Obtained the “Jiangsu Provincial Enterprise Credit Management Standardization Certificate”
2018: Rated as “Advanced Unit in Intellectual Property in Nanjing Urban Area”
2017: Rated as “Advanced Unit in Intellectual Property in Nanjing Urban Area”
2016: Rated as “National High-tech Enterprise”
2016: Rated as “Nanjing Specialized, Refined, Characteristic and Novel Enterprise”
2016: Rated as “Member of the Civil Air Defense and Underground Space Branch of China Exploration & Design Association”
2016: Rated as “Jiangsu Private Technology Enterprise”
2014: Rated as “Jiangsu Provincial Technology-based Small and Medium-sized Enterprise”
Post time: Jan-19-2026