April 2 (Reuters) - Zhengzhou Yutong Bus Co Ltd:
* SAYS 2017 NET PROFIT DOWN 22.6 PERCENT Y/Y AT 3.1 BILLION YUAN ($493.59 million)
* SAYS IT SOLD 3,432 BUSES IN MARCH, DOWN 17.4 PERCENT Y/Y Source text in Chinese: bit.ly/2pWA5wR; bit.ly/2Ec70C0 Further company coverage: ($1 = 6.2805 Chinese yuan renminbi) (Reporting by Hong Kong newsroom)