巍华新材(603310.SH)：公司四代制冷剂项目目前正处于设备采购安装阶段

Group 1 - The company is currently in the equipment procurement and installation phase for its fourth-generation refrigerant project, with plans to begin product trial production in the first half of next year [1] - The patent protection period for the fourth-generation refrigerant is not uniform, as it varies by specific category, technology, and company [1] - Some related patents are indeed set to expire next year, but there is no standardized timeline for these expirations, and different patents have different expiration dates [1]