1. Development, application, and impurity removal of phosphorous acid synthesis processes. Application development technology for electronic-grade phosphorous acid.

2. Flame retardants: From "single-point breakthrough" to "system synergy": Modern flame retardant formulations are no longer about individual components working alone, but rather about building a synergistic system. For example, the design concept of single-component macromolecular intumescent flame retardants is to integrate the acid source, carbon source, gas source, and even synergists (such as nano-zirconium phosphate that can catalyze char formation, and hindered amines that can quench free radicals) required by traditional intumescent flame retardants into a single macromolecule through chemical bonding. This design not only improves flame retardant efficiency but also solves the problems of easy moisture absorption and poor compatibility in traditional multi-component blends. From "single function" to "multiple protection": In modern fires, smoke and toxic gases are often more deadly than the flame itself. Therefore, the goal of modern flame retardant formulations has upgraded from simply "non-flammable" to multiple protections of "flame retardancy + smoke suppression + anti-dripping". For example, adding nanofillers to the formulation can not only physically block heat, but also catalyze the material to carbonize, forming a dense carbon layer, thereby effectively suppressing smoke generation and dripping phenomena.