WT1 series plasticizers are a type of citrate-based non-toxic primary plasticizers that can fully replace general phthalate-based plasticizers (such as DOP, DBP, etc.) and p-xylene DOTP for use in environmentally friendly PVC products such as disposable gloves, labor protection gloves, toys, yoga balls, flooring, calendered film hoses, stationery, shoe materials, etc. They exhibit good compatibility with nitrile rubber and can be used in nitrile rubber compounding products and nitrile-modified PVC products. They also have good plasticizing and softening effects on water-based styrene-acrylic, pure acrylic coatings, epoxy resin acrylic resins, etc.