三一重工 http://v.yihoo.sh/flash/2014/d67a31c2c2c6b1b8-1.mp4 http://v.yihoo.sh/flash/2014/d67a31c2c2c6b1b8-2.mp4 http://v.yihoo.sh/flash/2014/d67a31c2c2c6b1b8-3.mp4 http://v.yihoo.sh/flash/2014/d67a31c2c2c6b1b8-4.mp4