At a time when photovoltaic technology is accelerating its iteration, Tongwei once again sets a new industry benchmark with its hardcore technological strength. On June 3, tested by the internationally authoritative TÜV Rheinland, under the standard module size of 2384×1303mm, Tongwei's THC-G12 heterojunction copper-interconnected module achieved an output power of 802.43W, with a full-area conversion efficiency of 25.83%. This marks the twelfth time the series has broken the industry power record since its launch, leading the heterojunction industrialization process into a new phase.

1

Deep Technological Breakthrough, Laying the Foundation for the Record

The birth of this record is a concentrated demonstration of Tongwei's technological innovation capability. Tongwei's PV R&D team has always upheld the R&D spirit of "pursuing excellence and striving to be first," adopting copper-interconnection metallization technology to achieve 100% silver-free heterojunction modules. On the cell side, it incorporates the industry's first-ever three-segment manufacturing, back-passivation technology, ultra-fine copper gridline technology, and edge optimization technology, driving breakthrough progress in cell efficiency. On the module side, it employs busbar-free interconnection technology, ultra-high cell-to-module ratio design, ultra-high light utilization, and ultra-low-loss line transmission, achieving higher light utilization and lower transmission losses. The dual effects combined successfully pushed the THC-G12 heterojunction copper-interconnected module's conversion efficiency beyond 25.83%.

2

Innovation System Support, Building Sustainable Competitiveness

The successive record-breaking achievements are inseparable from Tongwei's forward-looking R&D layout and systematic innovation capability. The company has built an innovation system covering the full chain of "R&D – Pilot – Mass Production," forming tight technical barriers and an intellectual property system in key heterojunction process areas. On this basis, as the lead unit of China's "15th Five-Year Plan" National Key R&D Program, Tongwei will unite the industry's strongest forces to tackle frontier technologies such as heterojunction fine-tuned local fields, full silver-free metallization, and ultra-high bifaciality, continuously consolidating its global leading position in heterojunction technology. Meanwhile, Tongwei's Global Innovation R&D Center continues to drive the integration and iteration of multiple technology routes including HJT, TOPCon, BC, and perovskite/crystalline silicon tandem, ensuring its technology leadership remains unshaken.

3

Authoritative On-Site Certification, Announced to Global Attention

This milestone achievement was officially announced to the world during the 2026 Shanghai SNEC International Solar PV and Smart Energy Conference. Li Weichun, Senior Vice President of Solar & Commercial Products Services for Greater China and Senior Vice President of Global Power Electronics Services at TÜV Rheinland, the internationally leading testing and certification body, presented Tongwei with the authoritative test certification certificate on site, rigorously verifying multi-dimensional indicators including module power, efficiency, and reliability. This marks that the high-efficiency performance of Tongwei's THC modules has received recognition from an authoritative international third party.

Tongwei's record-breaking achievement not only consolidates its global leadership in high-efficiency PV modules, but also demonstrates the powerful momentum of Chinese PV enterprises in continuously driving technological iteration. Going forward, Tongwei will continue to uphold the philosophy of technology-first and innovation-driven development, delivering products and services with higher efficiency and higher reliability to accelerate the energy structure transition and support the achievement of global "dual carbon" goals.