A discarded mineral water bottle is clearly easier to enter the recycling system than a plastic bag of laundry detergent and potato chips. According to Wu Chang, the Asia Pacific Technical Director of Dow's Packaging and Special Plastics Business Unit, plastic products made of single materials such as mineral water bottles have clear recycling links, high availability, and low reprocessing costs, making them popular in the market. However, plastic products in soft packaging such as laundry detergent and potato chips are often made by bonding multiple layers of plastic and glue, making recycling difficult. In 2021, the material recycling volume of waste plastics in China was about 19 million tons, with a recycling rate of 31%, which is nearly 1.74 times the global average material recycling rate of waste plastics. The recycling capacity accounts for about 70% of the global total, and 100% of the domestic material recycling has been achieved. However, it is worth noting that the recycling rate of plastic products is relatively low in some regions of the country, with lower recycling rates for flexible packaging, making it a major "killer" of environmental pollution. As a technician, Wu Chang has been focusing on the field of chemical materials for nearly thirty years and has been constantly trying to break through. From April 17th to 20th of this year, the "CHINAPLAS2023 International Rubber and Plastic Exhibition" was held in Shenzhen, lasting for four days. More than 3900 rubber and plastic industry chain enterprises from around the world participated in the exhibition. At the conference, many industry insiders mentioned to First Financial reporters that every year, the exhibition brings together numerous upstream plastic enterprises. The innovation of upstream enterprises often plays a good leading role in the technological improvement of the entire industry chain. Industry experts have also stated that many new technologies have already established cooperation with brands with strong environmental and energy-saving awareness, and they hope that the entire industry chain can form a synergy to bring out the best technologies and form a larger scale of cooperation. Plastic recycling dilemma China is a major packaging manufacturing and consumption country in the world. Plastic packaging has accounted for more than 30% of the total output value of the packaging industry, playing an irreplaceable role in food, beverage, daily necessities and industrial and agricultural production. In recent years, China's plastic packaging industry has been in a stable growth trend, ranking second only to paper packaging in the proportion of packaging product structure. However, at present, the waste flexible packaging is often disposed by incineration and landfill. The industry generally appeals that recycling is the best way to truly solve the problem of plastic resource utilization, so as to promote the realization of carbon peak and carbon neutrality. Why is it so difficult to recycle flexible packaging? Wu Chang introduced that taking laundry detergent packaging as an example, generally speaking, laundry detergent packaging bags look like a thin and smooth plastic bag, but even traditional laundry detergent packaging bags require three layers of plastic and two layers of glue to complete the structure. Among these three layers of plastic, there should be at least two or more materials used inside, the most traditional may be PET, and there may be some polyethylene in the middle. Generally, two layers of glue are needed to composite the three layers of materials together. But in reality, PET and polyethylene are completely incompatible, and it is difficult to recycle such products. According to current common applications, these materials are still necessary to produce this bag. When laundry detergent is used up, plastic bags cannot be recycled, and may end up with