上证早知道｜三家公司，今日复牌；粤港交易所互访时延降至1ms以内

Group 1 - The 7th United Nations Environment Conference will be held from December 8 to 12 in Nairobi, Kenya, aiming to inspire global collective action against climate change, pollution, and ecosystem degradation [2] - The revised "Securities Settlement Risk Fund Management Measures" will take effect on December 8, expanding the investment scope of the risk fund to include key term government bonds and other approved forms of fund utilization [2] - Jiahua Technology will resume trading on December 8, planning to issue shares and pay cash to acquire 90% of Shudun Information Technology and raise matching funds [2] - Annie Co., Ltd. will resume trading on December 8, with Shengshi Tianan becoming the controlling shareholder and gaining control of the company [2] Group 2 - ST Tianrui will resume trading on December 8, but the change of control matter has been terminated due to lack of consensus [3] - Nabichuan is available for subscription today with an issue price of 22.63 yuan and a price-to-earnings ratio of 28.70 times, with a subscription limit of 0.65 million shares, focusing on battery liquid cooling plates [3] - Youxun Co., Ltd. is available for subscription today with an issue price of 51.66 yuan and a price-to-earnings ratio of 60.27 times, with a subscription limit of 0.45 million shares, focusing on optical communication transceiver chips [3] Group 3 - The Financial Regulatory Bureau has announced adjustments to the risk factors for insurance companies' related business, which may release over 100 billion yuan into the market [5] - The China Securities Regulatory Commission is soliciting public opinions on the "Regulations on the Supervision and Administration of Listed Companies," which clarifies requirements for market value management, cash dividends, and share buybacks [5] Group 4 - The National Internet Information Office is soliciting public opinions on the "Network Data Security Risk Assessment Measures (Draft for Comments)" [6] - The National Medical Products Administration held an administrative guidance meeting on December 5 regarding online drug sales platforms, addressing prominent issues found in drug sales monitoring [6] - Shanghai has launched the first comprehensive traffic signal data open and application management service platform in a major city, with real-time data from 7,600 intersections to boost advanced autonomous driving research and production [6] - According to the China Construction Machinery Industry Association, excavator sales are expected to reach 20,027 units in November 2025, a year-on-year increase of 13.9%, with domestic sales of 9,842 units (up 9.11%) and exports of 10,185 units (up 18.8%) [6] Group 5 - The China Securities Regulatory Commission will appropriately relax regulations for quality institutions, aiming to enhance capital utilization efficiency [8] - Huachuang Securities believes the securities industry has shifted from a defensive contraction to an offensive expansion, opening up space for further ROE improvement [9] - The merger of Guotai Junan and Haitong Securities has been approved, with the third quarter showing a 136% year-on-year increase in revenue and a 101.52% increase in net profit [9] Group 6 - The market sentiment has improved, with major indices rising, and the adjustment of risk factors for insurance companies is expected to inject more liquidity into the market [11] - China Galaxy Securities anticipates that the upcoming policy window will provide direction for economic work in 2026 and indicate structural market trends [11] - Guotai Junan's merger effects are gradually becoming apparent, with significant revenue growth reported [11] Group 7 - The 2025 Cultivated Diamond Industry Conference was held, signing 30 projects with a total investment of no less than 15 billion yuan, and the market for cultivated diamonds is expected to exceed 102.5 billion yuan by 2030 [17] - Pacific Securities notes that the demand for diamond heat dissipation technology is increasing due to the rapid growth of AI and cloud computing technologies [17] - Related companies like Guoji Precision Engineering and Sifangda are actively pursuing opportunities in the diamond heat dissipation market [18]