电动粉笔机操作视频
http://player.youku.com/player.php/sid/XMTIxNjIyODA4/v.swf
FM800-1型粉笔机操作视频
http://player.youku.com/player.php/sid/XMTIxNjM4MTEy/v.swf
粉笔装盒视频
http://player.youku.com/player.php/sid/XMTExOTY1NDUy/v.swf
