This chemical,the Ammonium polyphosphate flame retardants was developed by the Nanjing Normal Universiy of China in October 1991.The product patent at first was transferred to our factory in the same year.The patent chemicals was put into industrial scale production in 1992.The APP produced by our factory was checked and approved for the fire-fighting Materials and Equipment on the Sccurity Department of Jiangsu Province in China in February 1992.And then its quality and technique were evaluated to "reach the advanced world level" by the Applicable chemicals Research Institute of the East China Chemicals University in Shanghai of china in the same year.

This APP is an inorganic flame retardants which is litter toxic but high effective on the flame retardants.Especially,APP-1 is an APP of high polymerization degree.It can be used independently and combined with the other flame retardants for its molecularity weight is big,It contain higher percentage of P and N,the heat stabilization is good,the harmonious.It can be widely used as the additive to the wood,paper,coating compound,plastics and rubber.In recent years,APP flame retardants is widely used and repidly developing in our country,It sells well and has won a warm reception from our buyers.Its market prospect is very excellent in the world.

APP is packed in 25kg 3-ply paper bags with polyethylene lining.The Standard supply unit is a big woven bag with 32 bags weighing 800kgs net on a pallet.