MMR Information Systems, Inc. Completes Joint Venture Agreement With Unis-Tonghe Technology, a Division of Tsinghua Holdings in China LOS ANGELES, CA--(Marketwire - January 4, 2010) - MMR Information Systems, Inc. (OTCBB: MMRF) ("MMR") and Unis-Tonghe Technology (Zhengzhou) Co., Ltd. ("UNIS"), confirmed today that they have signed...