港股煤炭股普涨，力量发展涨2.6%

Group 1 - The core viewpoint of the article highlights a general increase in coal stocks in the Hong Kong market on September 8, with notable gains among various companies [1] Group 2 - Strength Development saw a rise of 2.6% [1] - China Qinfa, Yanzhou Coal Mining, China Coal Energy, and South Gobi all increased by over 2% [1] - China Shenhua rose by 1.5%, while Yida Zong also gained over 1% [1] - Shougang Resources followed the upward trend [1]