The company interates production, sales and scientific research, and its main product is sodium pyrosulfite and leucogen，with annual output over 30000 tons. Other products include: anhydrous sodium sulfite、2-naphthol、6 nitryl-1，2-diazo oxonaphthalene-4-mahagony acid、naphthalene diol、acid medium black A、acid medium black T, etc.     With the tenet of ensuring quality, seeking perfectness and satisfying customers, relying on excellent products and service, we make progress bravely, innovate incessantly, and play a leading role in 20 years in this trade in China. We sincerely welcome new and familiar customers both at home and abroad to cooperate with us on mutual benifit basis and develop together.