1. Anionic surfactant
（1）Sulfonates: sodium sulfate, potassium sulfate, sodium hydroxide, etc.;
（2） Polyoxyethylene: polyethylene glycol ether (PEG), polyethylene glycol sulfate (PES), polyoxyethylene ethyl ether (POE), etc.;
（3）Mercaptans: sodium mercaptide, potassium mercaptide, phosphate mercaptan, sulfate mercaptan, etc.;
（4）Chlorides: sodium chloride, potassium chloride, etc.;
（5）Fatty alcohols: glycerin, ethylhexyl alcohol, stearyl alcohol, etc.;
（6）Glucitols: stearic acid such as zein alcohol, glucitol, mannitol, sodium dodecyl benzene sulfonate;
2. Cationic surfactants
（1）Alkyloxyethers: aromatic alkyloxyethers, alkyloxyethersulfonylureas, etc.;
（2）Carboxy compounds: lauryl alcohol chloride, sodium benzoate, sulfonamide chloride, etc.;
（3）Azide compounds: diphenyl sulfonate chloride, sulfamide chloride, etc.;
（4）Other categories: polyethylene glycol coupling agent, ethylenediaminetetraacetic acid, sulfamic acid, etc.
3. Zwitterionic surfactants:
（1）Lecithin, amino acid type, betaine type；
4. Nonionic surfactants:
（1）Fatty acid glycerides, fatty acid sorbitan (Span), polysorbate (Tween).
