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VOC emitters, means there are emissions generated?

Yes

VOC is volatile organic compounds (volatile organic compounds) of the acronym. The ordinary sense of VOC is to refer to volatile organic compounds; but the environmental sense of the definition is to refer to a lively class of volatile organic compounds, that is, will produce harm to the class of volatile organic compounds.

VOCs, or volatile organic compounds, have a huge impact on human health. When the VOC in the room reaches a certain concentration, a short time people will feel headache, nausea, vomiting, fatigue, etc., serious convulsions, coma, and will harm the human liver, kidneys, brain and nervous system, resulting in memory loss and other serious consequences.

Expanded Information

Hazards and Sources of Volatile Organic Compounds:

Volatile organic compounds (VOCs) are usually classified into several categories such as non-methane hydrocarbons (referred to as NMHCs), oxygen-containing organic compounds, halogenated hydrocarbons, nitrogen-containing organic compounds, sulfur-containing organic compounds, and so on.

VOCs are involved in the formation of ozone and secondary aerosols in the atmospheric environment, and their contribution to regional atmospheric ozone pollution, PM2.5 pollution is important. Most VOCs have an unpleasant special odor and are toxic, irritating, teratogenic and carcinogenic, especially benzene, toluene and formaldehyde, which can cause great harm to human health.

VOCs are an important precursor to urban haze and photochemical smog, and are mainly derived from processes such as coal chemical, petrochemical, fuel paint manufacturing, and solvent manufacturing and use.

Baidu Encyclopedia-VOC

Baidu Encyclopedia-Volatile Organic Compounds