Searainbow Holding Corp. is principally engaged in the pharmaceutical electron exchange business, pharmaceutical e-commerce business, digital entertainment business and high technology chemical fiber business. The Company's pharmaceutical e-commerce business are based on electron on-line transaction systems with open tenders of pharmaceuticals as basic business mode. The target clients of the Company are medical institutions. Through its associate, the Company operates medical welfare management business. As of December 31, 2010, the Company had three subsidiaries.