With the intensification of environmental problems and people's attention to environmental issues, more and more people are discovering the seriousness of the environmental hazards of plastics. The mainstream and most common solution in the world today is recycling. OLED displays and flexible displays, which are used as screens for folding cell phones because of their foldable nature, are also very popular in the market. This article describes how to recycle and purify different types of plastic products according to their type, and reuse the recycled plastic products to manufacture OLED displays as well as their plastic substrates for environmental purposes. The ultimate vision for this chain is that within the next 20 years, there will be a single chain that will reach the point where recycled plastics can be recycled and completely used for production in an optimal way to achieve carbon neutrality.