原标题：国产品牌4月销量猛增，比亚迪31.3万霸榜，埃安大幅下滑31%
rame width="500" height="300" scrolling="no" frameborder="0" border="0" allowfullscreen="true" src="http://www.yexian114.com/skin/default/image/nopic.gif">rame>
