江丰电子：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 focuses on the research, production, and sales of ultra-pure metal sputtering targets and precision semiconductor components, with no current involvement in ruthenium targets [1] Company Overview - The main business of the company includes ultra-pure metal sputtering targets, which consist of aluminum, titanium, tantalum, copper, and various ultra-pure metal alloy targets [1] - The company has confirmed that it does not engage in the business of ruthenium targets at this time [1]