国产性色播播毛片_久久中文精品无码_成年女人片免费视频播放a_a国产三级级在线电影大学生

    Principle: a kind of equipment which dries and dehydrates materials by using steam or hot air.Dehydration capacity: 30%-65%.
    Raw materials suitable for drying: vinasse, germ, starch or bean dregs, bark fiber and coal, etc.