AOTELAI Chemical is professional in development, production and selling of various dyes. Based on professional technology and international leading technique, we have developed series of high-end metal complex dye, chromium-free dye, benzene-free dye and heavy metal free dye.Relying on stable quality, our products are extensively applied in tobacco industry, such as, in Yuxi Series, Hongta Series, Huanghelou Series, Huangshan Series and Liqun Series. Our product has advantages of high quality, complete specifications and colors. AT series dyes is excellen...