Shanghai Yongzeng Chemical Co., Ltd

Shanghai Yongzeng Chemical Co., Ltd. was officially established in August 2008. As an independent sales company separated from the original factory, we have factory prices, professional domestic sales, export business services, and product quality Jiangsu, 99% content, Shanghai, Zhangjiagang, spot supply, Nantong, direct sales, purchase, 2,2 '- bipyridine, 4,4' - bipyridine, tetrahydropyranone, tetrahydropyran-4-ol, tetrahydropyran-4-carboxylic acid, p-toluenesulfonic anhydride, copper iron reagent, 2,5-dihydroxybenzoic acid, 2-deoxy-D-glucose, 3-amino-2-hydroxyacetophenone, manufacturer, supplier, purpose, specifications, spot, price, storage conditions, production process