1. VRS(Vapor Recovery System) 

VRS(Vapor Recovery System) is system for recovering emission of volatile organic compounds(VOC) into atmosphere, effected by manufacturing, transporting and process of using Gasoline, Naphtha, Benzene, and organic solvents. 

2. Volatile Organic Compound
Volatile Organic Compounds(here in after ‘VOC’)is the form occurred by manufacturing, transporting and process of using Gasoline, Naphtha, Benzene, and organic solvents evaporates into atmosphere, which composed as ingredient complex with aliphatic hydrocarbon and aromatic hydrocarbon. Especially aliphatic hydrocarbons, nitrogen compounds among upon list react with sunlight to form Ozone and also some aromatic hydrocarbons and halogen hydrocarbons is hazardous material, can effectively harm the human body.