Currently, there are over 500,000 electric scooters in Taiwan, using over one million batteries. The Environmental Protection Agency estimates that Taiwan will need to eliminate approximately 1,100 metric tons of lithium batteries annually after 2025. This massive recycling and reuse demand urgently requires a circular economy solution. Yesterday (the 18th), the Environmental Protection Agency announced research results in collaboration with the Industrial Technology Research Institute (ITRI), which purifies the "black powder" from discarded secondary lithium batteries into higher-value, high-purity cobalt sulfate and cobalt oxide, chemical raw materials for lithium battery positive electrode materials. The amount of discarded secondary lithium batteries is expected to increase significantly, and the demand for raw materials is also high. Lithium batteries that can be recharged and reused, known as secondary lithium batteries, are widely used in mobile phones, cameras, laptops, and tablets. In recent years, electric scooters, bicycles, and large energy storage devices have also relied heavily on lithium batteries for power. However, Taiwan relies on imports for the precious metals used in lithium batteries, such as cobalt, lithium, nickel, manganese, and copper. According to statistics from the Environmental Protection Agency, the recycling volume of secondary lithium batteries (including electric cars and motorcycles, 3C products and products containing secondary lithium batteries) was about 600 metric tons last year (2021), but by 2025, it will grow to about 1,100 metric tons of secondary lithium battery waste per year. The Environmental Protection Agency pointed out that electric vehicles have driven the booming lithium battery market, and the demand for raw materials has continued to increase. Based on sales estimates, there are a total of 8,000 electric vehicles and 500,000 electric motorcycles. Such a booming "million electric vehicle market" is especially due to the surge in discarded lithium batteries. Although the current annual processing capacity of the six treatment plants in our country is about 2,200 metric tons, it is enough to cover the 2025