National Heavy Rainfall Forecast Chart
The Central Meteorological Observatory issued a blue rainstorm warning at 6 o'clock on July 14th:
It is estimated that from 08:00 to 15:00 on the 14th, southern Anhui, southern Jiangsu, western and northern Zhejiang, Shanghai, south-central Hunan, north-central Jiangxi, western and southern Yunnan, southern Guizhou, northwestern Guangxi, northwestern Shanxi, southeastern Tibet There are heavy rains in the Ministry, such as heavy rains (100-120 mm) in parts of southeastern Anhui, southwestern Jiangsu, and northwestern Zhejiang. The above-mentioned local areas will have strong convection such as short-term thunderstorms or hail. the weather.
Defense Guide:
1. It is recommended that the government and relevant departments do a good job in defensive rainstorm emergency work in accordance with their duties;
2. Cut off the outdoor power supply in the dangerous zone and suspend the outdoor operation;
3. Do a good job in the drainage of cities and farmland, and pay attention to prevent disasters such as flash floods, landslides and mudslides.
Hydrofluorocarbons (HFCs), organic compounds that contain fluorine and hydrogen atoms,
are the most common type of organofluorine compounds. They are commonly used in air conditioning and as Refrigerants [4] in place of the older chlorofluorocarbons such as R-12 and hydrochlorofluorocarbons such as R-21. They do not harm the ozone layer as much as the compounds they replace; however, they do contribute to global warming. Their atmospheric concentrations and contribution to anthropogenic greenhouse gas emissions are rapidly increasing, causing international concern about their radiative forcing.
Fluorocarbons with few C-F bonds behave similarly to the parent Hydrocarbons, but their reactivity can be altered significantly. For example, both uracil and 5-fluorouracil are colourless, high-melting crystalline solids, but the latter is a potent anti-cancer drug. The use of the C-F bond in pharmaceuticals is predicated on this altered reactivity.[5] Several drugs and agrochemicals contain only one fluorine center or one trifluoromethyl group.
HFCs(hydro-fluorocarbon)
Hfcs(Hydro-Fluorocarbon),High Fructose Corn Syrup,Fructose Corn Syrup Hfcs,High Fructose Syrup
Quzhou Xiecheng Chemical Co., Ltd. , http://www.xcrefrigerant.com