Paper production takes straw, reed and short lint-based as main raw materials, also including talc soda ash, rosin, starch, bleaching powder, aluminum sulfate, paraffin, soda and polyvinyl alcohol. Some flammable and explosive materials are likely to be invloved in some process steps to form explosive gas and dust environments. When they reach the explosion limit, if meeting proper tenmperature, a fire or explosion will be led.