Group 1: Hydrogen Energy Sector Performance - The hydrogen energy concept sector index opened at 1167.60 points and closed at 1730.33 points in 2025, marking an increase of over 48% within the year [1] - The sector index experienced a six-day consecutive rise since the beginning of the year, closing at a historical high with a final increase of 1.76% [1] - All 11 stocks in the sector, referred to as "湘股," saw price increases last year, indicating strong market performance [1] Group 2: Key Stocks in the Sector - The stock with the highest increase in 2025 was 凯美特气, which rose from an opening price of 6.13 yuan per share to a closing price of 21.22 yuan per share, achieving a year-on-year increase of over 246% [1] - 惠同新材, another key player, had a total increase of 72.19% in 2025, with its stock price rising from 21.12 yuan per share to 27.80 yuan per share within six trading days in 2026 [3] - The 11 stocks in the hydrogen energy sector include 惠同新材, 金博股份, 时代电气, 百利科技, 科力远, 时代新材, 惠博普, 凯美特气, 中联重科, 岱勒新材, and 恒光股份 [1] Group 3: Company Financial Performance - 凯美特气 reported a net profit of 75.4 million yuan for the third quarter of 2025, with a year-on-year growth of 326.54% [2] - The company's hydrogen gas revenue reached 102 million yuan, accounting for 33% of total operating income in the first half of 2025 [2] - 惠同新材 reported a net profit of 38.6 million yuan for the third quarter of 2025, with a year-on-year growth of 23.98% [2]