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The change in the concept of ice and snow industry has boosted the daily limit of iceberg cold and snowman shares, while the change in the concept of ice and snow industry has boosted the daily limit of iceberg cold and snow, snowman shares and Rhine Sports, and Sanfu Outdoor, Dalian Shengya, Changbai Mountain and Yuanlongyatu have followed suit.The 30-year Treasury ETF rose sharply at the opening, hitting a record high. Both "Boshi SSE 30-year Treasury ETF" and "Pengyang China Bond -30-year Treasury ETF" rose by 0.65%.The three major indexes all fell by more than 1%, with nearly 4,200 stocks, and the index weakened sharply. The Shanghai Composite Index fell by more than 1%, the Shenzhen Component Index fell by 1.24%, and the Growth Enterprise Market Index fell by 1.45%. Securities, real estate and photovoltaics were among the top losers, with nearly 4,200 stocks falling in Shanghai, Shenzhen and Beijing.

Texas, the United States, launched an investigation into technology platforms for the protection of minors. Texas Attorney General Ken Paxton said on Thursday that the attorney general's office launched an investigation into more than a dozen technology platforms, covering practices on the privacy and safety of minors. Paxton added that the surveyed platforms include artificial intelligence chat robot startups such as Character.AI, Reddit, Instagram and Discord. Social media companies said that they will cooperate with officials to protect young users, and said that they have launched new tools aimed at protecting teenagers from surfing the Internet, including parental controls.Shangpin home delivery and Shulan signed a strategic cooperation agreement. According to Shangpin home delivery, on December 11th, Shangpin home delivery and Shulan formally signed a strategic cooperation agreement at Changshun Group headquarters. The two sides will break through the customized track, explore the path of "customization+software" integration and co-construction, jointly explore market channels, and provide consumers with more convenient, personalized and professional home solutions through integrated and integrated ecological scenarios.Musk moved SpaceX headquarters to the Starbase in Texas.

China, with the largest plantation area in the world, has become the country with the greatest contribution to greening in the world. In the past 30 years since the signing of the United Nations Convention to Combat Desertification, China has made remarkable achievements in combating desertification, especially since last June, China has launched the "Three North" project. At present, the forest coverage rate in the "Three North" project area has increased from 5% in the 1970s to 13.84%. By the end of 2023, the forest coverage rate in China exceeded 25%, the forest stock exceeded 20 billion cubic meters, and the plantation area ranked first in the world, making it the most green country in the world. (CCTV News)The turnover of Shanghai and Shenzhen stock markets exceeded 500 billion.Chongda Technology: Five measures are taken to deal with the challenges and opportunities of industry development. Chongda Technology (002815) said in the online collective reception day of investors on December 12 that the company's measures to deal with the challenges and opportunities of industry development include: optimizing product structure, continuing to promote the optimization and upgrading of product structure, increasing R&D investment and market expansion in the field of high-end PCB boards, and accelerating the introduction of high-value customers and orders; Improve production efficiency and cost control; Accelerate the pace of capacity expansion, and promote the speed of capacity improvement of Dalian Plant, Zhuhai No.1 Plant and Zhuhai No.2 Plant in an orderly manner; According to market demand, adjust product price strategy in real time to improve profitability; Accelerate the construction of production base in Thailand, actively participate in international competition and cooperation, and enhance the company's visibility and influence in the global PCB market.