On the afternoon of March 17, 2026, Shunna Co., Ltd. (000533) surged to the daily limit and closed at 20.53 yuan, achieving two consecutive daily limits. The core drivers come from two major logics:
- Strong demand from AI computing infrastructure: Shuntec Electric, a subsidiary of the company, is a leading dry-type transformer manufacturer in China. Its products have been certified by major data centers including Huawei, Tencent and Alibaba. As the power per cabinet of AI servers surges from 6kW to over 120kW, dry-type transformers have become the core of data center power supply due to their fireproof, explosion-proof and high-reliability features, leading to a widening supply-demand gap.
- Booming exports to North America: Local transformer production capacity in North America only meets 50% of demand, leaving a 50% shortage. Shuntec Electric’s dry-type transformers have been exported to more than 60 countries including North America, which has become its fastest-growing market with a sharp year-on-year increase in orders.The company’s products adopt epoxy resin casting technology, with no-load loss 20% lower than the national standard, suitable for strict PUE requirements of data centers, and the gross profit margin is 10–15 percentage points higher than that of traditional transformers.