Sanhuan Group specialized in manufacture dyes, pigments and resins. the first factory for dyes was found in 1982. now our group has 5 factories and the business activities involved dyes ,pigments, resins and additives for paints, inks and coatings. In order to enlarge our sales volume in the international market, in 2004 we established Qingdao Sanhuan Colorchem Co., Ltd. in charge of export business. Moreover, we have gained high reputation and established long and friendly business relationships with many customers in Latin America, Europe, North America, Middle East, Southeast Asia and Africa.learn more
Light stabilizers are a group of additives that have been developed to minimise or prevent the damage to plastics caused by exposure to the environmental parameters of light, heat and air.COLORCHEM offers a complete range of light stabilizers• Benzophenones：
1. TOBIAS ACID (2-Amino-1-naphthalenesulfonic)2. J ACID (2-Amino-5-naphthol-7-sulfonic acid)3. PHENYL J ACID (7-anilino-4-hydroxy-2-naphthalenesulfonic Acid)4. J ACID UREA(5，5 DIHYDROXU-2，2 DINAPHTHYL UREA-7，7 DISULFONIC ACID)5. H ACID (1-amino-8-naphthol-3,
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