Thiourea dioxide is called TDO or FAS for short. It is a kind of good de-inking and bleaching agent for paper, pulp as well as textile industry to be substituted for sodium hydrosulfite. It is especially suitable for producing high brightness paper grades using recycled fibre (RCF). It can meet the demand of environmental protection owing to containing no chlorine. We start to produce TDO in 1983, and our products have been exported to Europe, America and south-east Asia. Our annual capacity is 1500mt. Being the earliest and the largest TDO manufacturer in china, our products enjoy high reputation in the world market owing to its uniform and excellent quality.
