August 6th， 2012 At about 23:00,A worker named XiaoMing pushed a plastic box filled with rags to the production lines.When he passed the 2# and the 3#gate(becuase there are some bolts between the 2#&3# gate which was once used for fixing the shelf ,but didn't remove the bolts after remove the shelf)with the box rapidly,box hit t...
