Jan 31 (Reuters) - Realcan Pharmaceutical Co Ltd :
* SAYS PRELIM 2017 NET PROFIT UP 70.8 PERCENT Y/Y AT 1.0 BILLION YUAN ($159.15 million) Source text in Chinese: bit.ly/2rUEwvG Further company coverage: ($1 = 6.2835 Chinese yuan renminbi) (Reporting by Hong Kong newsroom)