Diethylene glycol can be directly used mainly for various purposes of solvents, natural gas dehydration desiccant, aromatics separation extractant, textile lubricant, softener, finishing agent, and cellulose nitrate, tree Chemicalbook grease, grease and printing ink solvents, also used as brake fluid, compressor lubricating oil antifreeze component, can also be used to prepare cleaning agent, and In ink and other daily chemicals as a dispersing solvent.