Introduction

The currents of history surge forward with the passage of time.

The vessel of development progresses through determined efforts and competition.

As we turn the pages of the 2024 calendar, each page reflects the collective efforts of Tongwei people with a narrative of perseverance: we have boldly ascended the peaks of technology, repeatedly setting new sector records; we stand strong on the global stage, representing the only Chinese PV company to be listed twice among the Fortune Global 500; we have set sail, with our footprint spanning the globe, enhancing the core competitiveness of China’s PV industry in the international market; we have deeply stuck to green development principles, exploring new sustainable pathways for "dual carbon" goals; we have amplified China's voice in PV and energy storage, creating one of the top three international PV and energy storage events globally, thereby shining a spotlight on the "new business card of China’s PV industry"; we continue to inherit and innovate within our corporate culture, solidifying the "roots" and "soul" of high-quality development...

Though the words may be few, they encapsulate our unwavering commitment; though the passages may be short, they vividly illustrate our mission. As the new year begins, let us unroll the scroll of time and reflect on the extraordinary journey of 2024 through a set of keywords, collectively embarking on the journey of striving for 2025. May all of us seize the moment and pursue our dreams. Let's set sail again in 2025!

Tongwei Annual Keyword ①

Technological Innovation

Technological innovation is the core element of developing new quality productive forces and serves as the fundamental driving force behind the growth of China's PV industry.

As one of the leading PV enterprises in the world, Tongwei has participated in and witnessed the entire process of China's PV industry evolving from small to large, from weak to strong, transitioning from catching up to keeping pace, and ultimately achieving surpassing and front-running in all aspects. Throughout this journey, Tongwei has consistently prioritized technological innovation while focusing on key technological breakthroughs, actively nurtured new quality productive forces, and continuously shaped new development dynamics and advantages, thereby further strengthening the core competitive edge of China's PV industry.

In this issue, with a focus on technological innovation, we will showcase how Tongwei continuously advances high-quality development through increased innovation in the PV industry.

Technology Leadership

Breakthroughs: Tongwei Continuously Sets New Sector Records

In 2024, Tongwei continued to explore the mainstream industry technologies of TOPCon, HJT, xBC, and perovskite/c-Si tandem solar cells and modules, consistently setting new sector benchmarks.

Tongwei's Intelligent Manufacturing Workshop for High-efficiency Module

In October 2024, the THC-210 heterojunction module, independently developed by Tongwei, achieved a maximum output power of 776.2 watts and a photoelectric conversion efficiency of 24.99% at a size of 2384*1303mm, as certified by the authoritative testing organization TÜV Rheinland. This signifies a significant breakthrough that the power of heterojunction modules has reached the 775-watt milestone for the first time, and also marks the ninth time since 2023 that Tongwei has set new records for the power and efficiency of heterojunction modules.

Tongwei's Intelligent Manufacturing Workshop for High-efficiency Module

On December 25, 2024, TÜV Rheinland tested and confirmed that Tongwei's TNC-G12-66 model achieved a maximum output power of 763.4 watts, while the TNC-G12R-66 model reached 663.5 watts, once again breaking the power records in the PV sector. In addition, Tongwei's N-type TBC modules exceeded 655 watts in a batch-based R&D initiative, and the perovskite/c-Si tandem solar cells achieved a maximum efficiency of 33.98%.

Tongwei Modules Support the Grid Connection for Power Generation of the Water-PV Complementary Project with the Highest Average Elevation in Sichuan Province

The frequent updates to Tongwei's module power records further validate the immense potential of Tongwei's high-efficiency module products, opening up more possibilities for technological advancements within the sector.

Innovative Landmark

Advancing into the "Deep Waters" of Innovation with Tongwei Global Innovation R&D Center

On June 6, 2024, the Tongwei Global Innovation R&D Center was officially completed and put into operation.

In November 2023, the construction of the Tongwei Global Innovation and R&D Center commenced in Shuangliu, Chengdu; just six months later, in June 2024, the center was officially inaugurated.

Liu Hanyuan, Deputy to the NPC, Vice Chairman of All-China Federation of Industry and Commerce, and Chairman of the Board of Directors of Tongwei Group, stated that the positioning of the Tongwei Global Innovation R&D Center is to serve as a guiding point for the company in the next 5 to 10 years and beyond, focusing on finding direction, mitigating risks, identifying market positions, and developing mainstream technologies, with the goal of establishing an innovative landmark that aligns with the company's industry status and aspires to be a National Enterprise Technology Center.

Chairman Liu Hanyuan Conducted an Inspection and Provided Guidance on the Work

The Tongwei Global Innovation and R&D Center encompasses the current mainstream solar cell and module technologies. It focuses on the R&D and advancement of next-generation high-efficiency solar technologies to firmly grasp the initiative in technological progress and industrial development, and strives to become a source of PV technology innovation that leads the western region, influences nationwide, and targets global markets.

General Meeting of Shareholders of Sichuan Tongwei Crystalline Silicon PV Industry Innovation Co., Ltd.

In 2024, the PV Technology Center of Tongwei Co., Ltd. engaged in in-depth discussions with leading enterprises across various segments of the industry chain, including DR Laser from Wuhan, Cybrid Technologies from Suzhou, Wuxi Lead Intelligent Equipment, and Changzhou Fusion New Materials, as well as CDHT HI-TECH and Sparkedge Capital, actively exploring collaborative innovation within the industry. In June 2024, Sichuan Tongwei Crystalline Silicon PV Industry Innovation Co., Ltd. was successfully established, and in November 2024, the company's general meeting of shareholders was successfully convened, collectively exploring institutional and technological innovations to contribute to the cultivation of new quality productive forces in the PV sector.

Technical Communication

Shaping a New Blueprint for Sector Development with Collaborative Intelligence

In 2024, Tongwei Co., Ltd.'s PV Technology Center actively engaged in industry communication and collaboration, contributing Tongwei's expertise and solutions to the prosperity and advancement of the sector.

Technical Experts from Tongwei Co., Ltd.’s PV Technology Center Participated in Professional Conferences

By the end of 2024, the PV Technology Center has participated in over 60 industry-specific conferences and forums, sharing Tongwei's innovative practices and experiences in driving energy transition through keynote speeches, case studies, and panel discussions on topics such as cell characteristics, ecological design of modules, PV raw materials, packaging technology, production processes, PV technology, and the PV supply chain.

The 8th Roundtable Conference of China PV Solar Energy High-Efficiency Heterojunction 740W+ Club Was Successfully Held

During the 2024 the 7th China International PV and Energy Storage Industry Conference, the 8th Roundtable Conference of China PV Solar Energy High-Efficiency Heterojunction 740W+ Club took place successfully. As the rotating chair of this conference, Tongwei convened with leaders from fourteen member units of the 740W+ Heterojunction Club and top industry experts to engage in in-depth discussions on the direction of industry development.

Tongwei's Technology R&D Team

In 2025, Tongwei will continue to share its technological research and development achievements with the PV sector, and collaborate with peers to explore new technologies, trends, and futures in the sector, thereby contributing to the technological advancement of the PV industry.

Technological Patents

Transforming Intellectual Property into Assets to Empower Industry Innovation and Development

According to the PV Industry Patent Development Report, the growth rate of patent applications in China's PV sector has been remarkable over the past decade. As of May 2024, China reported 74,000 total valid patents and 22,000 total valid invention patents in the PV sector, both of which took the lead globally.

So far, Tongwei has established three National Enterprise Technology Centers. In terms of intellectual property, by the end of December 2024, it has obtained 2,675 patent authorizations both domestically and internationally, earning accolades such as the National Intellectual Property Demonstration Enterprise and the National Intellectual Property Advantage Enterprise, along with the First Prize of Sichuan Provincial Patent Award. These achievements effectively promote the transformation of scientific and technological achievements, converting intellectual property into effective assets and advancing the new quality productive forces in the PV sector.

In December 2024, TW Solar's independently developed high-efficiency N-type TOPCon solar cells achieved a groundbreaking milestone by being recognized as the "First (Set of) Major Technical Equipment in Sichuan Province", which marks the first inclusion of solar cell products in this category since Sichuan began its recognition process for major technical equipment in 2013. Additionally, the local standard of Sichuan Province for TOPCon led by TW Solar has been successfully published, marking a milestone for crystalline silicon cells in Sichuan's local standards.

Behind these technological breakthroughs and innovative projects

are the dedicated efforts of the Tongwei people

who concentrate on research and overcome challenges day and night

Each exploration they undertake shines a light

on the path of "Technology Innovation", making it brighter with every step.

A nation thrives with technological advancement

and a strong nation is built on robust technology

Today

as the world accelerates its transition to a green and low-carbon economy

China's PV sector continues to solidify its core competitive advantages

Represented by Tongwei, Chinese PV enterprises

will persist in technological innovation and self-reliance

continuously fostering new quality productive forces in energy

and steadfastly advancing along the path

 of high-quality energy development in the new era