1. This product belongs to oil in water type emulsifier, which can be used as solubilizer, dispersant, stabilizer, lubricant and antistatic agent. As a paraffin inhibitor in oil production, it can remove the wax deposit in oil well; As a viscosity reducer, it can reduce the flow viscosity of crude oil, improve oil well production and transportation capacity. 2. Used as solubilizer, penetrant and dispersant in medicine and daily chemical industry. Because of its antirust and lubricity, it is used to prepare antirust lubricating oil and derusting and degreasing oil. As O / W type food emulsifier, it can be used alone or mixed with Span-60, span-65 and Span-80. In China, it can be used for ice cream with the maximum dosage of 1.5g/kg; 75 g / kg in fruit juice beverage; 5 g / kg. 3. Used as non-ionic emulsifier, wetting agent and penetrant. 4. Used as solubilizer, penetrant and dispersant in medicine and cosmetics. In the adhesive, coating, ink and pigment industries, it is used as a control agent for carrier fluidity and a dispersant for preventing precipitation. In textile industry, because of its good emulsifying property to fat and fatty oil, it is used as softener, finishing agent, lubricant and antistatic agent of various fiber fabrics. In detergent production, it is compounded with Sodium Alkylbenzene Sulfonate to improve the ability of decontamination, foaming and resistance to multivalent metal ions. It can also be used as emulsifier, pesticide emulsifier, antirust lubricating oil, derusting and degreasing oil for various foods.