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Rainstorm Blue Warning Signal Rainstorm Blue Warning Signal Meaning: Rainfall will be over 50mm in 12 hours, or it will be over 50mm and rainfall may continue.
Heavy Rain Yellow Warning Signal Yellow Rain Warning Signal Meaning: Rainfall will reach 50 mm in 6 hours, or it will reach 50 mm or more and rainfall may continue.
Storm orange warning signal Storm orange warning signal means: The rainfall will reach 50 mm in 3 hours, or it will reach 50 mm or more and the rainfall may continue.
Rainstorm Red Warning Signal Rainstorm Red Warning Signal Meaning: Rainfall will reach more than 100mm within 3 hours, or it will reach 100mm or more and rainfall may continue.
Since its establishment in 2004, Shandong Dingfeng Door Industry Co., Ltd. has been adhering to the principle of supplying high quality products with great architectural requirements. Continuous improvement, creation of perfection, and continuous service to this industry with superb technology. Due to the problem of urban internality that has existed for many years in the country, it has intensified. Dingfeng Door Industry Co., Ltd. has researched and developed DEFE combined flood control flaps in order to solve the domestic crisis situation and serve the society.
DEFE combined flood control flap, also known as flood control flap, flood control flap, flood control panel, flood control panel, garage flap, flood control panel, aluminum alloy flap, is mainly used for temporary flood prevention and flood protection in flood season. Suitable for installation in subways, tunnels, underground shopping malls, underground garages and other underground entrances and exits, as well as residential quarters, buildings, hotels, schools, government agencies, and public institutions, such as major entrances and exits.