巍华新材：公司四代制冷剂项目目前正处于设备采购安装阶段

Core Viewpoint - The company is currently in the equipment procurement and installation phase for its fourth-generation refrigerant project, with plans to begin trial production in the first half of next year [1] Group 1 - The fourth-generation refrigerant patent protection period varies by specific category, technology, and company, indicating a lack of uniformity [1] - Some related patents are set to expire next year, but there is no standardized timeline for these expirations, as different patents have different expiration dates [1]