Yantai Dasteck Chemicals Co., Ltd. is a comprehensive corporation combined with scientific, industrial and trading sectors. It engages in the manufacture and R & D of various chemicals, esp. paper and textile chemicals, such as thiourea Dioxide, Bleaching Agent for Deinked Pulp, Strong Reductive Agent, Methane Sulfonic Acid, Zirconium Tetra-n-Butoxide etc, which are mainly used in paper, textile, electroplating and fuel batteries. 　　Our new products, paper auxiliary FAS and textile auxiliary SRA-1, have been successfully used in various paper and textile enterprises. We started to produce our main product Thiourea Dioxide in 1983, its annual capacity is 4000mt. Being the earliest TDO manufacturer in China, we were elected as the director of China TDO and Other Relevant Industry Association owing to our stability and excellent product quality. We enjoy a high reputation in the international market and achieved the ISO9002 Quality System Certification.