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Is ammonia harmful to people’s health? First, ammonia is a colorless gas with a strong pungent odor, lighter than air. The gas often comes from concrete admixtures used in building construction and additives and brighteners used in interior decoration materials. Long-term exposure to ammonia, some people may appear skin pigmentation or finger ulcers and other symptoms; After being […]

Background How long does it take for a gas leak to cause a violent explosion? The answer is 20 minutes. Many people think it takes hours from the moment the gas starts leaking to the moment it meets a spark and explodes, but scientific tests by the fire department have proved that the process takes only