Located in Tongxiang economic and technical development park in Zhejiang province, Zhejiang Tiandao Bio-engineering Co., Ltd. is a stock bio-tech enterprise, and our business includes research, development, production and trade. With a land of 28,000sqm and CNY 50 millions of investment, we yearly produce 2,000 tons of biological products BS, 5,000 tons of biological chemical additive TD and 3,000 tons of environment-friendly printing & dyeing auxiliary HQ. Our Iminodiacetic acid plant is reorganized and rebuilt on the basis of Zhejiang Linan Chemical Factory, which is the appointed enterprise of former chemical ministry and key manufacturer of Zhejiang petrochemical bureau for dye and intermediates. Its products included vat dyes, disperse dye, acid dyes, direct dyes, reactive dyes, and ..