Dongxu Optoelectronics (600673.SH) and Chaozhou Three-Circle (Group) Co., Ltd (300408.SZ) lead a wave of buyback announcements, alongside a significant sodium-ion battery materials investment by Rongbai Technology.

Dongxu Optoelectronics (600673.SH) announced its controlling shareholder, Shenzhen Dongxu Optoelectronics Industrial, has proposed a share buyback of between 300 million yuan and 600 million yuan. The buyback price will not exceed 150% of the average trading price over the 30 trading days prior to the board resolution. The buyback will be executed within six months of board approval. Simultaneously, the controlling shareholder plans to increase its stake by 300 million to 600 million yuan over the same six-month period, with a commitment not to sell any shares during the campaign and the legal period thereafter.

Chaozhou Three-Circle (Group) Co., Ltd (300408.SZ) plans to repurchase between 500 million yuan and 1 billion yuan of its own A-shares using either its own funds or self-raised capital. The buyback price is capped at 135 yuan per share. The shares will be used for equity incentive plans, employee stock ownership plans, or to safeguard the company's value and shareholder rights (including potential sales).

Rongbai Technology announced a major investment of 4.723 billion yuan to construct a 300,000-ton-per-year sodium-ion battery cathode material integrated project in Xiantao. The project includes 4 billion yuan in fixed assets and 723 million yuan for working capital. It will be built in three phases: 50,000 tons in the first phase, 100,000 tons in the second, and 150,000 tons in the third. The construction cycle is expected to take 24 months. Funding will come from the company's own funds (20%), bank loans (43%), and other self-raised sources (37%). The move aims to seize the sodium-ion battery industrialization window and solidify the company's first-mover advantage in this sector.

Delong Hui Neng reported that shareholder Liu Xin increased his stake by 1.6435 million shares through centralized bidding on July 30. This brings his total holdings to 17.9835 million shares, representing 5.01% of the company's total shares. Liu Xin did not rule out further increases in the next 12 months and will comply with disclosure rules.

Youyan New Materials plans to invest 486 million yuan in a second-phase expansion project for high-purity sputtering targets used in integrated circuits. The project will add 30,000 units of annual capacity for high-purity copper, tantalum, and titanium targets. Construction is scheduled to start in September 2026, with production commencing in September 2027.

Financial Results

Weihong Technology: Net profit for the first half of 2026 was 6.0243 million yuan, down 79.4% year-over-year. Pudong Construction: New project contracts in the second quarter of 2026 totaled 2.989 billion yuan, down 8.82% year-over-year.

Buyback & Stake Increase Activity

Wangsu Technology: Plans to buy back 300 million to 600 million yuan in shares for cancellation. Bohai Leasing: Plans a 200 million yuan share buyback. Yonggui Electronics: The actual controller proposed a 100 million to 150 million yuan buyback. Huayuan Holdings: Plans a 50 million to 100 million yuan buyback. Chaoda Equipment: Will increase its total buyback funds to 50 million to 100 million yuan. Libate: Plans to buy back 30 million to 60 million yuan. Guangzhi Technology: Some directors, executives, and key personnel plan to increase their holdings. Zhongtian Service: The controlling shareholder plans to increase its stake by at least 2.6 million shares. Kehui Shares: The controlling shareholder has completed its planned stake reduction, selling a total of 3% of shares.

Major Contracts

Suoling Shares: A wholly-owned subsidiary signed a major operational contract worth 883 million yuan.

Other Developments

ST Longyuan: Reported new litigation cases with a cumulative amount involved of approximately 817 million yuan.