henan hongye chemical company ltd. is the leading professional manufacture and supplier of thiourea dioxide and bleaching agent fas in the world. we can produce 16000mt thiourea dioxide(formamidinesulfinic acid) and bleaching agent fas per year. use:thiourea dioxide is a new kind of reducing agent that used as exchange of sodium hydrosulfite. it is widely used in texlile and paper making industry. this product is also used in leather processing industry, paper,pulp and board industry, photographic industry,bleaching and reducing agents.this product is also a component of decolorisation agents.in macromolecule material industry,it is used as catalysis agent and stabilizer of resinic producing,and it is also used in organic synthesization of sensitizing material,and medicine,medical,spicery materials in fine chemicals, and also can be applied in the recycling and separating of heavy metals. other name: formamidine sulfinic acid, amino imino methanesulfinic acid