Black-and-white culture insulation film is widely used in poultry breeding, livestock breeding shed, aquaculture, edible fungi cultivation shed, farm construction, flower cultivation, grass feed storage, pond bottom, greenhouse construction project and so on. Its main functions are shading, reflecting, cooling and heat preservation. The temperature difference between inside and outside is about 10 degrees. In summer, the white surface reflects the sunlight outside, and the black surface blocks the light from entering, which can completely cut off the light and reduce the temperature in the shed. In winter, black is beneficial to absorb sunshine and snow melts quickly. White reflects heat back into the shed to prevent heat loss and play a role of heat preservation.