Dowstone(SZ:300409) Zhong Zheng Wang·2025-09-04 01:53Group 1 - The core viewpoint of the article is that Daoshi Technology's subsidiary, Hong Kong Jiana, has signed a Pre-B round preferred stock subscription agreement with Brain Family Inc., a leading brain-computer interface technology company, investing $30 million to acquire minority shareholder rights [1] - Brain Family Inc. has over 460 authorized patents and its core products have received multiple international certifications, including FDA and CE, indicating strong R&D capabilities and commercial applications in high-value fields such as medical rehabilitation, educational technology, consumer health, and human-computer interaction [1] - The investment aims to leverage opportunities in the AI era, enhancing the company's "AI + materials" strategy and improving its core competitiveness through collaboration with Brain Family Inc. in the application of carbon materials in areas like electronic skin [1] Group 2 - The preferred shares acquired by Hong Kong Jiana will have superior rights in liquidation, voting, and repurchase compared to common shares, and can be converted to common shares at a 1:1 ratio [1] - The pricing of the subscription was determined based on the industry characteristics, R&D strength, future potential of Brain Family Inc., and valuations from other investors in the Pre-B round [1]