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Changyi Haosen Biotechnology Co., Ltd. is a professional late-model manufacturer of thiourea dioxide / pulp bleaching agent FAS.The quality of all the TDO produced by our company implements the People's Republic of China chemical industry standards HG / T3258-2010.
By using new technological process, our thiourea dioxide crystalline granularity is more symmetrical and not easy to agglomerate. Our products also have good fluidity, great solubility and strong reducibility. As our products' external dryness is completely in comformity with the inside dryness, they are not easy to undergo spontaneous combustion, so the storage period has been greatly extended, which perfectly satisfies customers' needs. Our products have been exported to the USA, Japan, Korea, Europe and other dozens of countries and regions. They are widely used in textile printing and dyeing, papermaking, the synthesis of organic compounds,etc. and are highly praised by customers!