On August 6, China's A-share markets showed mixed performance across major indices, opening lower before rallying and then retreating in a volatile session. The Shanghai Composite Index closed up 0.57% at 3900.35 points, reaching an intraday high of 3902.05 points — a new high since July 22. The Shenzhen Component Index fell 0.24% to 14110.12 points, while the ChiNext Index dropped 0.55% to 3515.56 points. The STAR 50 Index rose 0.45% to 1701.29 points, and the Beijing Stock Exchange 50 Index added 0.31% to 1122.88 points. Total trading volume on the Shanghai and Shenzhen exchanges was approximately 2.5475 trillion yuan, shrinking by about 130.87 billion yuan from the previous session. Across the market, 2,789 stocks advanced while 2,590 declined, with 83 hitting the daily limit up and only one hitting the limit down, meaning gainers accounted for 50% of all listed stocks.
Key drivers and sector performance
The Shanghai Composite outperformed the Shenzhen Component and ChiNext indices, reaching a session high of 3902.05 points, surpassing the July 22 intraday peak of 3884.44 points and setting a new stage high. The coal sector sustained strength throughout the day, with Beijing Haohua Energy Resource Co.,Ltd. (601101), Huaibei Mining Holdings Co.,Ltd. (600985), Pingdingshan Tianan Coal.Mining Co.,Ltd. (601666), Yankuang Energy Group Company Limited (600188), and Shanxi Lu'An Environmental Energy Dev.Co.,Ltd. (601699) all hitting the daily limit up. The coal mining sector rose 4.56%, making it the most prominent heavyweight sector of the day. Electronic specialty gases and industrial gases maintained their strong momentum, driven by HBM, 3D NAND, and advanced process technologies boosting the per-wafer usage of wet electronic chemicals and specialty gases, with price increases for key materials like tungsten hexafluoride acting as a catalyst. Guangzhou Guanggang Gases&Energy Co.,Ltd. (688548) disclosed in its investor relations record that tungsten hexafluoride adopted an independent pricing strategy based on supply-demand dynamics starting from the third quarter, with the product's revenue growing nearly threefold year-on-year in the first half. The fluorochemical sector was active, with third-quarter long-term contract prices for mainstream refrigerants like R32 and R134a rising month-on-month, while spot fluorspar prices continued to climb. Overnight gains in international gold prices lifted the precious metals sector. Technology sectors such as semiconductors and communication equipment rebounded sharply after a weak open but gave up gains in the afternoon, with the STAR 50 Index initially surging over 2% before settling at a 0.45% gain.
Leading sectors in detail
Electronic specialty gases/industrial gases: This sector led the market strongly throughout the day. Sichuan Shudao Equipment & Technology Co.,Ltd. (300540) hit the 20% daily limit, Zhejiang Zhongxin Fluoride Materials Co.,Ltd. (002915) also reached the 20% limit, and Yunnan Lincang Xinyuan Germanium Industry Co.,Ltd. (002428) hit a two-day consecutive limit. Guangzhou Guanggang Gases&Energy Co.,Ltd. (688548), Guangdong Huate Gas Co.,Ltd. (688268), and Befar Group Co.,Ltd. (601678) all saw intraday gains exceeding 10%, closing up 6.94%, 7.57%, and 8.71% respectively. HBM, 3D NAND, and advanced process technologies increase per-wafer usage of specialty gases and precursors, driving up prices for key materials like tungsten hexafluoride. Additionally, Japan's Kanto Denka and Central Glass permanently ceased operations on July 1, collectively exiting about 2,200 tons of high-end tungsten hexafluoride capacity, representing roughly 25% of global high-end semiconductor-grade supply.
Coal: The coal mining sector rose 4.56%, with Beijing Haohua Energy Resource Co.,Ltd. (601101), Huaibei Mining Holdings Co.,Ltd. (600985), Pingdingshan Tianan Coal.Mining Co.,Ltd. (601666), Yankuang Energy Group Company Limited (600188), and Shanxi Lu'An Environmental Energy Dev.Co.,Ltd. (601699) all hitting the daily limit up. Henan Dayou Energy Co.,Ltd. (600403) gained 9.95%. The coal sector maintained a steady upward trend throughout the day, emerging as the strongest heavyweight sector.
Fluorochemicals/small metals: The sputtering target sector rose 7.71%. In the fluorochemical direction, Zhejiang Zhongxin Fluoride Materials Co.,Ltd. (002915), Do-Fluoride New Materials Co.,Ltd. (002407), and Befar Group Co.,Ltd. (601678) hit the daily limit up. In the small metals space, Yunnan Lincang Xinyuan Germanium Industry Co.,Ltd. (002428) and Grinm Advanced Materials Co.,Ltd. (600206) also reached the daily limit. The third-quarter long-term contract spot price for refrigerant R32 stood at 65,100 yuan per ton, up about 2,900 yuan per ton from the second quarter. Spot fluorspar prices rose to 3,475 yuan per ton, accumulating a gain of about 3% over the past month.
Sectors under adjustment
Blood products, AI language datasets, short drama/interactive games, and other sectors led the declines. Poly Union Chemical Holding Group Co.,Ltd. (002037) fell 10.56%, Guocheng Mining Co.,Ltd. (000688) dropped 6.65%, and Ping An Bank Co.,Ltd. (000001) declined 4.69%. China Northern Rare Earth(Group)High-Tech Co.,Ltd. (600111) fell 4.11%, while Mloptic Corp. (688502) lost 3.16%. The securities sector weakened, with Befar Group (06745) down 2.40% and Yankuang Energy (YZCAY) falling 3.06%. The battery sector dropped 2.74%, and the education sector fell 2.56%. These sectors had previously seen significant gains, making them the laggards on the day.
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