Core Viewpoint - Guanghe Tong (300638) has filed an international patent application for a "filter group and its control method, device, and electronic equipment," with the application number PCT/CN2024/141488, set to be published internationally on February 5, 2026 [1] Group 1: Patent Information - The company has announced a total of two international patent applications in 2023 [1] - The details of the patent application were sourced from the World Intellectual Property Organization (WIPO) [1] Group 2: Financial Data - In the first half of 2025, the company invested 239 million yuan in research and development, which represents a year-on-year decrease of 34.51% [1]