Roundel of China National Aviation Corporation (1997-): A white Chinese character "中" in circle (monochrome file uploaded).
<a href="//commons.wikimedia.org/wiki/User:Great_Brightstar" title="User:Great Brightstar">Great Brightstar</a>
Extracted from <a rel="nofollow" class="external text" href="http://www.hkexnews.hk/listedco/listconews/SEHK/2006/0622/LTN20060622059.pdf">Prese Release</a>