... -resistant Decorating Board Production Line, Straw Board Production Line, Straw Door Production Line, Wall Board (Sandwich Board) Production Line, Vent-pipe ... Board (MgO board), Fire-resistant Decorating Board, Straw Board, Straw Door, wall board(Sandwich Board), vent-pipe board and Roof Tile ... and they are purchased easily for customers.The cost per door is 75 Yuan, and the market price is over 300 ...