Fatty alcohol polyoxyethylene ether (AEO), also known as polyoxyethylene fatty alcohol ether. It is the fastest developing and largest dosage of nonionic surfactants. This type of surfactant is an ether formed by the condensation of polyethylene glycol (PEG) and fatty alcohol, which is represented by the following general formula: RO (CH2 H2O) NH, where n is the degree of polymerization, and there are different varieties due to different degrees of polymerization of polyethylene glycol and types of fatty alcohol.