Volatile Organic Compounds, often called VOCs, are the first letter of Volatile Organic Compounds. Total Volatile Organic Compounds are sometimes called TVOC. In China, VOCs refers to the saturated vapor pressure is greater than 70Pa at room temperature, the boiling point of organic compounds below 260℃ at atmospheric pressure, or at 20℃, the vapor pressure is greater than or equal to 10Pa and all organic compounds with volatile.

VOCs sources are wide, and the main pollution sources include industrial sources and living sources.

Source mainly include oil refining and petrochemical industry, coal processing and conversion contain VOCs, such as raw materials production industry, oil, fuel oil, solvent, etc.) storage, transportation and sales process, coating, ink, adhesives, pesticides and other VOCs as raw materials of industry production, coating, printing, adhesive, parting, the use of products containing VOCs such as industrial cleaning process; Living sources include building decoration, catering services and clothing dry cleaning.

VOCs pollution prevention and control should follow the comprehensive prevention and control principle of the combination of source and process control and terminal treatment. Adopt clean production technology in industrial production, strictly control VOCs emissions in the production, storage, transportation and marketing of raw materials and products containing VOCs, and encourage the recycling of resources and energy; Encourage the use of vocs-free alternatives or products with low VOCs content in production and life.