Daoming Optics&Chemical Co Ltd

On July 17, Ai Ai Precision Seals opened at its daily limit-up, securing its fourth consecutive limit-up, closing at 44.92 yuan per share with a latest market cap of 5.87 billion yuan. Earlier, the company disclosed progress on a change of control: actual controllers Tu Mulin and Cai Ruimei, a married couple, plan to transfer their equity, and the controlling shareholder will change to Shanghai Yusheng Tongfeng Metal Materials Technology Co., Ltd., with the actual controller changing to Yuan Yuan. After the change, Shanghai Yusheng will hold 40% of Ai Ai Precision Seals. The power sector saw a sudden surge, with Huayin Electric Power hitting its limit-up, sealed by over 900,000 lots of buy orders. Leshan Electric Power and Shennandian A also hit their limit-ups, while Hangzhou Thermal Power and Xichang Electric Power rose in tandem. On the news front, the National Energy Administration released data showing that total electricity consumption in June reached 898.1 billion kilowatt-hours, up 3.7% year-on-year, with electricity use in charging and battery swap services and internet data services surging 57.1% and 41.4% respectively. The on-device hardware concept was active, with AI phones and glasses leading the gains. Mio Exhibition hit a 20% limit-up, and Daoming Optics rose for a second consecutive limit-up. The Cyberspace Administration of China released filing information for seven mobile on-device generative AI services, including Apple Intelligence and Huawei's Xiaoyi AI large model. The smart driving concept was also active, with Soling Shares hitting its limit-up. On the news front, a Huawei executive said that autonomous driving will see rapid iteration, with low-speed L4 pilot programs in urban areas starting in 2026.

In early trading on July 16, Harbin Pharmaceutical hit its fifth consecutive daily limit, making it the stock with the longest winning streak among those still on a streak that day. The innovative drug theme remained strong, with Wanbang Pharmaceutical and Puruis rising over 10 percent. The on-device AI concept heated up, as Green Precision sealed a 20 percent daily limit, and Daoming Optics and Furong Technology also hit their daily limits. On the news front, seven on-device generative AI services completed regulatory filings, and the 2026 World Artificial Intelligence Conference is set to take place in Shanghai. The brain engineering sector saw a sudden surge during the session, with Chuangxin Medical hitting its daily limit in a straight line, and Saili Medical and Aipeng Medical following higher. The world's first implantable brain-computer interface system, NEO, saw its first prescription issued in Shanghai after receiving market approval. Total market turnover exceeded 1.4 trillion yuan, shrinking by 236.7 billion yuan compared with the same period last session, with over 3,200 stocks advancing.