April 13 (Reuters) - Gui Zhou Tyre Co Ltd:
* SAYS IT SWINGS TO NET LOSS OF 221.6 MILLION YUAN ($35.30 million) IN 2017 VERSUS NET PROFIT OF 15.2 MILLION YUAN YEAR AGO Source text in Chinese: bit.ly/2v8RVSp Further company coverage: ($1 = 6.2772 Chinese yuan renminbi) (Reporting by Hong Kong newsroom)