The chemical treatment of wood to render it fire retardant is a very important technology for reducing the long-term costs of structures. In this paper, a new fire retardant formulation called FRW, was formed using guanylurea phosphate (GUP) and boric acid as the main fire retardant components. Comprehensive research was performed on the synthesis, the wood treating, the performance of product and the fire retardant mechanism of FRW fire retardant. The industrial processing technology for FRW fi...