used as solvent, flux, smoothing agent, wetting agent, O/W Emulsifier and stabilizer;
2) the material of surfactant;
3) PEG400, 600, 800 can be used as base materail of medicine and cosmetics, the smooth agent and wetting agent of rubber and textile, grinding agent;
4) PEG200 can be used as heat carrier, or warm agent, solubilizer, Viscosity regulator and wetting agent of papermaking and pesticide;
5) high Molecular weight can be used as smooth agent, wetting agent, coolant, dispersant, antistatic agent