BRIEF-China's Rongsheng Petrochemical to invest 10.6 bln yuan in expansion

Jan 27 (Reuters) - Rongsheng Petrochemical Co Ltd * Says plans to invest 10.6 billion yuan ($1.70 billion) in expanding petrochemical unit's production capacity Source text in Chinese: http://bit.ly/1EodlI2 Further company coverage: ($1 = 6.2435 Chinese yuan renminbi) (Reporting by Hong Kong and Singapore newsrooms)