Tianjin Leading Import & Export Co., Ltd, established since 1997. Professional in manufacture and export of dyestuff and related chemicals.Sound and perfect system of production, R&D, marketing, logistics, and technology support.Good reputation in more than 20 countries. Annual production volume of 3000mt Metanil yellow, Acid orange II, and Direct red brown RN. One of the top exporters of Sulphur black BR and Sulphur colors from china.