The headquarters of henan luoran co.,ltd. is situated in one of ten charming cities, luoyang. it is the famous manufacturing base of dyes and dye intermediates in china. it has one international trade companies,shanghai dipu chemical co., ltd., and four producing base, henan luoran co.,ltd. head office, shandong weifang subsidiary company, shouguang xinghai chemical co.,ltd., lianyungang dipu chemical co., ltd.. the company has been appraised successively as henan high and new technology enterprise and the national excellent private chemical enterprise. the company has two main kinds of products,dyes and dye intermediates.as for dyes,there are sulphur dyes and disperse dyes.as for dye intermediates,there are 2,4-dinitro chlorobenzene,2,4-dinitrophenol(sodium),2,4-dinitroaniline,2-amino-4-nitrophenol(sodium),6-bromo-2,4-dinitroaniline,6-chloro-2,4-dinitroaniline, sodium thiosulfate and so on.