Qingdao Longyuntong Corporation is a professional chemicals company specialized in pigments, pigment intermediates and relating products. We supply organic pigment , iron oxides, chrome yellow/green etc. We are a leading manufacturer of Naphthol AS series (AS, AS-PH, AS-D, AS-E, AS-OL, AS-BS, AS-BO, AS-KB, AS-LC, AS-ITR, AS-CA, AS-P) and Base series with annual yield over 6,000MTs.


Our products are popular in over 30 countries in North America, South America, Europe, Southeast Asia, South Asia, Africa, and Middle East.