Edible black and white film is a bacterial culture made the process of a film, because Edible development process requires bacterial culture in low light, so is the need for shade, and black and white film came in handy. Edible black and white film puncture resistance, tensile strong, strong wind resistance. Flour used in the summer to cool compared with similar products up 5-10 degrees in the winter on the use of black face, night temperatures can enhance 3-5 degrees. Edible black and white film and a long service life. It can reduce the loss caused by high temperature, reducing the annual purchase of film, for the film's labor costs and increase revenue.