Changfeng was founded in 1999 with a registered fund of US$2.3 million and has the right of import and export. Major products include ammonium polyphosphate, phosphorus-containing halogen-free flame retardant, ammonium phosphate, potassium phosphate and fluid soluble fertilizer (solid and liquid). With complete raw material production line and the matching production licenses for hazardous chemicals, Changfeng is a professional manufacturer of Ammonium Polyphosphate (APP) in China, supplying the necessary conditions for sustainable development.