Group 1 - The core point of the article is that Trina Solar (688599) has filed an international patent application for a "stacked solar cell and its preparation method and application," with the application number PCT/CN2024/132988 and an international publication date of October 9, 2025 [1] Group 2 - Trina Solar has announced a total of 50 international patent applications this year, representing a 51.52% increase compared to the same period last year [3] - In the first half of 2025, Trina Solar invested 900 million yuan in research and development, which is a year-on-year increase of 6.6% [3]