Yichang East Sunshine Yangtze River Pharmaceutical Co., Ltd. is a Chinese company mainly engaged in pharmaceutical production and sales. Its business also includes drug research and development, marketing and distribution. The company's products include antiviral drugs, endocrine and metabolic drugs and cardiovascular drugs. Its core product portfolio includes "Kewei", "er Tongshu", "European and American Ning", "Xin Haining" and "Xining".