Core Viewpoint - The article discusses the application for a patent related to a method for the preparation and purification of hexafluorobutadiene by three companies, highlighting the advantages of the method in terms of cost and environmental impact [1][2]. Company Summaries - Zhonghua Lantian Electronic Materials (Hangzhou) Co., Ltd. was established in 2023, located in Hangzhou, with a registered capital of 150 million RMB. The company has invested in one enterprise, participated in two bidding projects, and holds 16 patents [1]. - Zhejiang Chemical Research Institute Co., Ltd. was founded in 1999, also in Hangzhou, with a registered capital of approximately 211.6 million RMB. The institute has invested in 10 enterprises, participated in 311 bidding projects, and holds 559 patents [2]. - Zhonghua Lantian Group Co., Ltd. was established in 2000, located in Hangzhou, with a registered capital of approximately 1.57 billion RMB. The group has invested in 22 enterprises, participated in 730 bidding projects, and holds 838 patents [2].