Caihe Community in Long Street. Kaifeng RTMART Supermarket, RT Mart, is a supermarket brand founded by Runtai Group in Taiwan Province, China in 1997, which is specifically managed by RT Mart Circulation Co., Ltd. According to the inquiry, official website, a supermarket in RT Mart, Kaifeng, learned that the supermarket belongs to Caihe Community in Long Street. Kaifeng, called Bianzhou, Bianliang and Bianjing in ancient times, is a prefecture-level city under the jurisdiction of Henan Province, and one of the central cities in the central area of China Central Plains urban agglomeration approved by the State Council.