BDP is a halogen-free, low-smoke, and slightly toxic environmentally friendly flame retardant. It has good compatibility with high polymers, is not easy to migrate and ooze, has a high phosphorus content, and has high flame retardant efficiency. It has a small quantity and good thermal stability. It meets the processing requirements of most plastic products. It is suitable for the production of flame-retardant PC/ABS alloy, flame-retardant HIPS/PPO alloy and flame-retardant PC. It can compete with the brominated flame retardant market in flame-retardant PC/ABS alloys. It can be used to manufacture flame-retardant PC/ABS and PC/PPO alloys for electronic computer display screens, copier casings and many fuselage electronic devices. When the addition of 18-21% is used to flame-retardant PC/ABS, the flame-retardant level of the material can reach UL94V-0. Possesses excellent notched impact strength. BDP is also widely used in flame-retardant PVC, cellulose resin, synthetic rubber, phenolic resin, epoxy resin, and polyester fiber. It is also a flame retardant extreme pressure wear-resistant agent of lubricating oil ester.