Longxing manufactures wide5-layer black/white silage films. The white layer, facing the sky, reflects heat and prevents overheating of the stored product, while the black layer assures total opacity which is necessary for maintaining the quality of the stored product and its nutrient value. Due to their 5-layer structure the films have lower gas-transmission than monolayer films and lead to better fermentation of the stored product, hence in better quality of the animal feed and more milk production.