午间涨跌停股分析：40只涨停股、4只跌停股，芯片产业链表现活跃，海立股份5天4板

Group 1 - A-shares saw a strong performance with 40 stocks hitting the daily limit up and 4 stocks hitting the limit down on August 12 [1] - Local stocks in Xinjiang maintained strong momentum, with Hongtong Gas achieving 5 limit ups in 6 days and Xinjiang Communications Construction achieving 3 consecutive limit ups [1] - The chip industry chain showed active performance, with Haili Co. achieving 4 limit ups in 5 days [1] Group 2 - Stocks that experienced consecutive limit ups include Jishi Media with 5 limit ups in 7 days, Beixin Road and Bridge, Xinjiang Torch, and Bayi Steel with 3 consecutive limit ups, and Feiya and Jiuding Investment with 2 consecutive limit ups [1] - Stocks that hit the limit down include Huangting International, *ST Bio, *ST Gaohong, and Huanshanghuan [2]