Waste mechanical and electrical products contain enormous wealth, and waste mechanical and electrical products contain abundant reusable resources. The core of building a resource-saving society is to save resources, and remanufacturing waste mechanical and electrical products is an important means of resource conservation. With the frequent application and scrapping of mechanical and electrical products, a large amount of waste epoxy copper clad plate scraps and printed circuit boards are produced every day. The recycling of epoxy copper clad plates is an important part of the recycling of waste mechanical and electrical products, which will become an important part of the circular economy.

      In the total amount of various materials in the world today, steel processed from renewable resources accounts for 45% of the total production, copper 35%, aluminum 22%, lead 40%, and zinc 30%. According to calculations, the current value of renewable resources that can be recycled but not recycled in China is as high as 30-35 billion yuan. Approximately 5 million tons of scrap steel, 200000 tons of non-ferrous metals, 14 million tons of waste paper, and a large amount of waste plastics, glass, etc. are not recycled annually.

      For each ton of waste materials recycled, 4.12 tons of natural resources can be saved, 1.4 tons of standard coal can be saved, and 6-10 tons of waste treatment can be reduced; For every ton of scrap steel utilized, 850 kilograms of steel can be produced, which is equivalent to saving 2 tons of finished iron ore and 0.4 tons of standard coal. Moreover, the steelmaking cycle with scrap iron is short. For example, refining 1 ton of steel with iron ore requires 8 working hours, while refining 1 ton of steel with scrap steel only requires 2-3 working hours. The pace of updating and upgrading electrical products is becoming faster and faster. The average lifespan of components in scrapped electrical products is only 20000 hours, while the average lifespan of components is 500000 hours. Therefore, the components in scrapped electrical appliances still have a strong life and a sufficiently long service life.

      Remanufacturing waste mechanical and electrical products is the best way to save resources. Remanufacturing, also known as "remanufacturing", refers to a series of technical measures or engineering activities that are guided by the full life cycle design and management of mechanical and electrical products, with the goal of achieving leapfrog performance improvement of waste mechanical and electrical products, guided by the principles of quality, efficiency, energy conservation, material conservation, and environmental protection, and using advanced technology and industrial production as means to repair and transform waste mechanical and electrical products. In short, "reengineering" refers to the industrialization of high-tech maintenance of waste mechanical and electrical products, which is the preferred form and approach for the resource utilization of waste mechanical and electrical products. It is of great significance for building a conservation-oriented society.

      One is significant economic benefits. The annual output value of the resource utilization industry in the United States in 2002 was 1.6% of GDP, and China's GDP is expected to reach 4 trillion US dollars in 2020. If the level of resource utilization in the United States in 2002 is taken as China's 2020 goal, the annual output value of the resource utilization industry will reach 64 billion US dollars;

      The second is the prominent role of environmental protection. The recycling of waste mechanical and electrical products can reduce environmental pollution caused by the extraction and extraction of original mineral deposits and the manufacturing of new products, greatly saving energy and reducing greenhouse gas emissions. The US Environmental Protection Agency estimates that if the achievements of the US automotive recycling industry are fully utilized, the level of air pollution will be reduced by 85% compared to the current level;

      The third is to alleviate employment pressure. The remanufacturing of waste mechanical and electrical products will drive a number of emerging industries and solve a large number of employment problems. The remanufacturing industry in the United States will create 1 million jobs by 2005, and if China reaches the scale of the United States in 2020, it will create 1 million jobs.

      China has abundant resources for remanufacturing. In 200 years, the number of cars in China was 19 million, with 2.1 million cars meeting the scrapping standards; The number of cars owned will reach 35 million in 2005, 47 million in 2010, and over 2 million cars will be scrapped annually. Since 2003, China has had an average annual scrap of 4 million refrigerators, with over 5 million washing machines, televisions, and computers each. Dongguan, which has a developed electronic industry, produces over 5000 tons of electronic product waste such as epoxy resin based printed circuit boards and copper clad panel scraps every month, while Guangdong Province produces over 800 tons.

      Waste mechanical and electrical products contain abundant reusable resources, which can be recycled and reused as an important part of the circular economy.