江丰电子：公司主营业务为超高纯金属溅射靶材和半导体精密零部件的研发、生产和销售

Core Viewpoint - Jiangfeng Electronics (300666) focuses on the research, production, and sales of ultra-pure metal sputtering targets and precision semiconductor components, with no involvement in lithium niobate target business [1] Group 1 - The main business of the company includes ultra-pure metal sputtering targets and precision semiconductor components [1] - The ultra-pure metal sputtering targets consist of aluminum, titanium, tantalum, copper, tungsten, and various ultra-pure metal alloy targets [1] - The company currently does not engage in the lithium niobate target business [1]