Key Corporate Announcements in the A-Share Market

Today's Focus 1. Anhui Conch Cement announced its intention to repurchase between 600 million and 1 billion yuan worth of its A-shares via centralized bidding. The repurchase price will not exceed 27.71 yuan per share, with the purpose of safeguarding company value and shareholder rights (reducing registered capital). The repurchase period is from May 29, 2026, to August 25, 2026.

2. Gigadevice Semiconductor Inc. clarified that its stock price had experienced abnormal fluctuations, with the cumulative deviation of closing prices exceeding 20% over three consecutive trading days. The company noted recent media reports linking its stock to the IPO of Changxin Xinqiao Technology Group. As of the announcement date, the company holds only 1.80% of Changxin Xinqiao's total shares, a relatively small stake that does not grant significant influence over its operations. This investment is classified under "other equity instrument investments," and any fair value changes from Changxin Xinqiao's IPO will not directly impact the company's current or future net profit. Separately, the company announced receiving a notice from major shareholder Zhu Yiming regarding a shareholding change exceeding 1%. Between May 11 and May 25, 2026, Zhu Yiming reduced his stake by 6.3299 million shares, or 0.90% of total shares. Following this change, the combined shareholding of Zhu Yiming and his concert party, Winful Luck Limited, decreased from 7.90% to 7.00%. The previously disclosed share reduction plan by the controlling shareholder is still in progress.

3. Sungrow Power Supply announced that its wholly-owned subsidiary, Shenzhen Sungrow Technology, recently signed a Computing Power Industry Cooperation Agreement with another company. The partnership focuses on four core areas: power-computing coordination, AIDC intelligent computing center operations, computing power industry resource integration, and computing service procurement and delivery. The total business volume involved is estimated at approximately 6 billion yuan. This agreement marks a significant milestone in the company's computing service business layout, providing strong support for growth and positioning it as a new engine for performance.

4. Beijing Bayi Space LCD Technology released an investor relations activity record, stating that its photoresist resin has achieved mass production, serving leading photoresist clients and passing verification for mass production in wafer fabs. With successful customer qualification and order growth, capacity utilization has increased, and costs have continued to decline. However, the company is increasing R&D investment in resin materials and actively advancing the construction of larger-scale production lines, which is expected to raise various expenses. The company aims to achieve profitability in its photoresist resin business by further increasing supply scale. It has developed full-series R&D and production capabilities for high-end semiconductor photoresist (KrF) resin, cooperating with several leading photoresist manufacturers. Multiple resin products are now in mass production delivery to customers, with improvements in product quality and order volume, achieving stable tonnage shipments.

5. Shenzhen Kaifa Technology announced that its wholly-owned subsidiary, Shenzhen Patton, and its controlled subsidiary, Hefei Patton Storage, plan to implement a high-end memory chip packaging and testing capacity expansion project. The total planned investment is 1.47 billion yuan for purchasing equipment such as high-end chip testers and high-precision wafer grinding integrated machines, as well as factory renovation and supporting power facilities. Upon completion, Shenzhen Patton is expected to increase monthly packaging capacity by 5 million dies and testing capacity by 8 million chips; Hefei Patton Storage is expected to increase monthly packaging capacity by 28.8 million dies.

6. Zhejiang Okai Cutting Tools announced that the preliminary price for its shareholder inquiry transfer has been set at 96.45 yuan per share. A total of 65 institutional investors participated in the inquiry subscription, with a valid subscription multiple of 2.36 times. The total number of shares intended for transfer is 8,732,993. Note: Okai's closing price today was 139.88 yuan per share, making the inquiry transfer price a 31.1% discount.

7. Guangzhou Tinci Materials Technology announced that its subsidiary, Taizhou Tinci, plans to initiate preliminary work for an annual 160,000-ton high-density lithium iron phosphate project, with an estimated total investment not exceeding 2.1 billion yuan. Located in Taizhou, Zhejiang, the project aims to strengthen the strategic layout of lithium-ion battery materials and form a comprehensive competitive advantage in lithium iron phosphate and lithium iron phosphate cathode materials.

8. *ST Wingtech announced that its 12th Board of Directors' 30th meeting reviewed and passed the "Proposal on Downward Adjustment of the Conversion Price of 'Wingtech Convertible Bonds'." To support the company's long-term stable development, optimize its capital structure, and fully protect investor rights, the board proposed to downwardly adjust the conversion price of the bonds, which will be submitted to the shareholders' meeting for review. The adjusted conversion price shall not be lower than the average trading price of the company's shares over the 20 trading days prior to the shareholders' meeting and the trading price on the preceding trading day. This proposal still requires approval from the shareholders' meeting.

9. Beijing YanDong Micro Electronics announced that its shareholder, Beijing E-Town International Investment & Development Co., Ltd., holding over 5% of shares, plans to reduce its stake by no more than 14,276,180 shares, representing no more than 1% of total shares, due to its own operational management needs. The reduction will be conducted via centralized bidding between June 17, 2026, and September 17, 2026.

10. Linzhou Heavy Machinery announced receiving a "Case Filing Notice" from the China Securities Regulatory Commission on May 26, 2026. Due to suspected violations of information disclosure regulations, the CSRC has decided to initiate an investigation. The company will fully cooperate with the investigation and fulfill its information disclosure obligations. Current production and operations remain normal. Investors are advised to invest rationally and be aware of risks.

11. Yes Optoelectronics announced that several major shareholders plan to reduce their holdings. Controlling shareholder Yes Optoelectronics (Hong Kong) Co., Ltd. plans to sell no more than 4.92 million shares (2.9938% of total shares). Shareholder Jie Zhigang plans to sell no more than 760,000 shares (0.4625%). Shareholder, director, and senior executive Bian Ruiqun plans to sell no more than 3 million shares (1.8255%). The reductions will be via centralized bidding or block trades within three months starting 15 trading days after the announcement, for personal/own funding needs.

Risks for Volatile Stocks 1. ShuangXing New Material (3 consecutive limit-ups): Revenue from MLCC products accounts for less than 1% of total company revenue. 2. Huasu Holdings (2 consecutive limit-ups): Equipment produced by subsidiary Hongchuang Intelligent is used for micro-drill bit processing, not PCB production business. 3. Wus Printed Circuit: As overall PCB industry capacity continues to expand, future market competition is expected to intensify. 4. Nexchip Semiconductor: The 2.5D packaging product line is currently undergoing customer sample verification and has not yet achieved mass production.

Repurchases & Shareholding Changes 1. MLS: Controlling shareholder and actual controller plan to increase holdings by 100 million to 150 million yuan worth of shares. 2. Jereh Oilfield Services: Chairman and vice president plan to increase holdings by 8 million to 10 million yuan worth of shares. 3. Wuxi AppTec: Obtained a stock repurchase loan commitment letter from China Merchants Bank. 4. YongAn Futures: Shareholder Zhejiang Orient plans to reduce holdings by no more than 3%. 5. Pioneer Material Precision Tech: Shareholder Youlijia Partnership plans to reduce holdings by no more than 3%. 6. Hunan Hengguang Technology: Shareholder Xiangjiang Investment plans to reduce holdings by no more than 2.99%. 7. Suzhou Kechuang Electronics: Shareholder Shi Huiqing plans to reduce holdings by no more than 2%.

Operational Performance China Petroleum Engineering: Newly signed contract value from January to April totaled 71.8 billion yuan, a year-on-year increase of 69.91%.

Major Contract Awards 1. Zhejiang Jingu: Received a project designation notice for the Avatar low-carbon wheel project. 2. China Railway Signal & Communication: Won five important project bids from March to April, with a total bid value of approximately 900 million yuan.