You must ask first to see if it is on now. An oil refinery is a chemical plant that refines crude oil (that is, petroleum processing). Now international futures crude oil has fallen, and some refineries have stopped production ... For example, Sinopec Tianjin Dagang No.4 Company ...: Jilin Petrochemical has stopped production; Working in an oil plant is not too difficult .. If possible, take a safety class first; Just try it. It is a state-owned enterprise. Just go in.