Zhejiang Riwa Group Co.,Ltd has following subsidiaries,Hangzhou Riwa Chemicals Co.,Ltd, Hangzhou Riwa Industry Co.,Ltd,Jiangsu Riwa Chemicals Co.,Ltd,Lianyungang Riwa Chemical Co.,Ltd and Hangzhou Riwa Import&Export Co.,Ltd withan an annual capacity of over 50,000 tons of chemical products,Riwa Group is specialized in producing many different types of pigments and chemical intermediates such as H acid, 2,4,5-Trichloronitrabenzene,2,5-Dichloronitrobenzene,2,5-Dichlorophenol 3,4,9,10-Perylenetraca...

more>>