蔚蓝锂芯：目前来看，21700产品在销售中的占比在提升，其单只平均盈利要优于18650产品

Core Viewpoint - The company is optimistic about the growth of downstream application demand for electric tool batteries, indicating a potential upward expansion cycle in the battery market driven by U.S. interest rate cuts and the North American real estate cycle [2]. Group 1: Market Demand and Trends - The company acknowledges an increase in demand for lithium battery products, suggesting a positive outlook for future sales [2]. - The company highlights that the proportion of 21700 battery products in sales is increasing, which is expected to enhance profitability compared to the 18650 products [2]. Group 2: Product Upgrades - Continuous upgrades of lithium battery products are being emphasized, indicating a focus on improving product performance and efficiency [2].