Today's key corporate announcements from the A-share market include a risk warning from a biotech firm, details of a major IPO, significant contract signings, and preliminary earnings forecasts.

Changxin Technology has announced the results for its initial public offering on the STAR Market. The final online subscription winning ratio was approximately 0.4714%. The issue price was set at 8.66 yuan per share, with valid online subscriptions from 9,428,778 accounts for 816.92 billion shares.

Wuhan Jingce Electronic Group Co., Ltd. disclosed that its controlling subsidiary, Shanghai Jingce, recently signed a sales contract worth 223 million yuan to sell semiconductor front-end measurement and inspection equipment, including film thickness series products and OCD equipment. Over the past twelve months, cumulative contracts with this client have reached 330 million yuan, which is expected to positively impact the company's operating results.

YinXin Technology Group Co.,Ltd. announced that its controlling shareholder and actual controller, Zhan Lixiong, has been served with a divorce petition by his spouse, Zheng Dan, requesting divorce and asset division. The case is currently in the acceptance stage and has not yet been heard in court. The potential financial impact is unclear. While the litigation involves only the shareholder's personal rights and is not expected to significantly affect the company's operations, it introduces uncertainty regarding potential changes in actual control.

Rongsheng Petrochemical Co.,Ltd. stated that its controlling subsidiary, Zhejiang Petroleum & Chemical Co., Ltd., plans to invest approximately 19.6 billion yuan in a refinery and chemical integration upgrade project with a two-year construction period. The project involves building new units and expanding/upgrading existing ones, aiming to deepen product processing, increase output of high value-added new materials, and enhance overall competitiveness. Upon completion, it is projected to generate an annual net profit of 1.41 billion yuan.

VeriSilicon Microelectronics (Shanghai) Co., Ltd. reported that from January 1 to July 16, 2026, it secured new orders totaling 14.653 billion yuan, primarily for its one-stop chip customization services with clear conversion prospects, though revenue recognition will take time. Specifically, from April 30 to July 16, new orders amounted to 6.413 billion yuan, over 90% of which were related to AI computing power and data processing.

Preliminary Financial Results

Zhuzhou Ouke Carbide Tools Co., Ltd. expects first-half net profit between 360 million and 420 million yuan, a year-on-year increase of 46,239% to 54,062%.

Lingyun Guangke anticipates first-half net profit of around 663 million yuan, up roughly 590% year-on-year.

Hygon Information Technology Co., Ltd. forecasts first-half net profit in the range of 1.70 billion to 1.83 billion yuan, representing growth of 41.50% to 52.32%.

Volatile Stock Risk Alert

Joinn Laboratories (China) Co.,Ltd. (SH: 603127), which has seen its stock hit two limit-ups in five trading days, issued a risk warning. The company stated that the fair value of its biological assets is subject to various uncertainties and carries significant risk of value fluctuation.

Share Buybacks and Changes in Holdings

Hotek Technology Inc. plans a share repurchase worth 40 million to 80 million yuan.

Xuelong Group Co.,Ltd.'s actual controller, He Cailin, has increased his holdings and plans further purchases.

Anhui Earth-Panda Advance Magnetic Material Co.,Ltd. announced that its actual controller and a director plan to increase their holdings by 10 million to 20 million yuan.

Sanjiang Shopping Club Co.,Ltd. disclosed that Alibaba Zeta reduced its stake by 2%.

Chengdu Okon Pharmaceutical Co., Ltd. reported that several shareholders intend to reduce their holdings.

Major Contract Awards

Shanghai Xianhui Intelligent Technology Co., Ltd. signed daily operational sales contracts worth approximately 920 million yuan.

China International Engineering Co., Ltd. signed a commercial contract for a port construction project in Nicaragua, with a total value of about 644 million yuan.