Group 1 - The core point of the article is that Sanan Optoelectronics (600703.SH) reported a significant increase in R&D expenses for the first half of 2025, amounting to 400 million yuan, which represents a year-on-year growth of 33.35% compared to the first half of 2024 [2][3] - The increase in R&D expenses is attributed to a higher number of capitalized R&D projects compared to the previous year [2]