Currently, the PV industry is transitioning from "scale expansion" to "value creation." The new generation of mainstream PV products must not only improve performance parameters but also deliver more comprehensive, quantifiable, and verifiable long-term value to customers. Behind the value release of high-efficiency modules, what solid support does Tongwei's cell technology provide? On June 3, at the Shanghai SNEC exhibition, Tongwei made a strong debut with its full PV industry chain capabilities. The Tongwei TNC series of high-efficiency cell products made a refreshed appearance, with the new-generation TNC high-efficiency cell manufacturing technology results unveiled on site for the first time.

From TNC 1.0 and TNC 2.0 to TNC 3.0, Tongwei has continuously driven the advancement of cell-side manufacturing technology. Through upgrades in TPE 2.0 edge passivation technology, Poly Tech 2.0 patterning technology, and full steel plate printing technology, it has continuously supported the value release of high-efficiency modules — from efficiency improvement and bifacial gain to reliable performance.

1

Higher Power: Three Core Manufacturing Technologies Work in Synergy, Supporting a 10W+ Power Increase for Same-Format Modules

Module power improvement comes not only from module-side structural design but also from the continuous iteration of key cell-side manufacturing technologies. From TNC 1.0 to TNC 3.0, Tongwei's cell conversion efficiency has continuously improved, and cell-side manufacturing technologies have continuously broken through in the directions of loss control, efficiency improvement, and manufacturing consistency, further supporting power release at the module level.

"TPE 2.0 edge passivation technology focuses on the edge damage issue after cell cutting. Compared with TPE 1.0, TPE 2.0 further reduces warpage, delivering better cell appearance; meanwhile, it reduces cutting-surface recombination loss through high-efficiency passivation, minimizing capability loss when high-efficiency cells enter the module application stage," said Qi Gang, Deputy Director of the Platform Process Integration Department at Tongwei Solar Co., Ltd. This technology can support a 5W+ power increase for same-format modules and significantly reduce UVID degradation, allowing high-efficiency capability to be more fully released at the module level.

Poly Tech 2.0 patterning technology improves grid line processing precision through polysilicon patterning upgrades, reducing optical parasitic absorption and processing damage. Compared with Poly Tech 1.0, Poly Tech 2.0 delivers cell conversion efficiency improvement and supports a 3W+ power increase for same-format modules and a 5%+ increase in bifaciality.

Full steel plate printing technology reduces grid line resistance, improves grid line flatness, consistency, and aspect ratio performance, supporting the stable mass production of fine grid line designs. It delivers cell conversion efficiency improvement, supports a 2W+ power increase for same-format modules, and further reduces hot spot risk.

The synergistic effect of these three core cell-side manufacturing technologies can support a 10W+ power increase for same-format modules, providing important cell-side support for high-efficiency module power improvement.

2

More Power Generation: Poly Tech 2.0 Unlocks Bifacial Gains, Supporting High Bifaciality Value

One of the important sources of "more power generation" is the scenario gain brought by high bifaciality. From TNC 1.0 to TNC 2.0, Tongwei's cell bifaciality increased from 80% to 85%. For TNC 3.0, the module side further achieves a value expression of up to 90% bifaciality. In high-reflection environments such as deserts, snowy areas, and water surfaces, rear-side power generation gains can further increase energy yield and reduce the levelized cost of electricity.

At the cell manufacturing level, Poly Tech 2.0 patterning technology optimizes rear-side polysilicon from full-area coverage to grid-line-area-only coverage through polysilicon patterning, ensuring ohmic contact while reducing rear-side optical parasitic absorption, increasing short-circuit current and cell conversion efficiency, and driving more full bifacial power generation release. This technology can support a 3W+ power increase for same-format modules and a 5%+ increase in bifaciality, providing important cell-side support for the "more power generation" value of high-efficiency modules.

3

Stable and Reliable: Technology Upgrades and Lighthouse Smart Manufacturing Work in Synergy, Supporting Long-Term Stable Module Performance

The value of high-quality modules is reflected not only in power and energy yield but also in the stability and reliability of long-term operation.

TPE 2.0 technology supports power improvement while significantly reducing UVID degradation by lowering cutting-surface recombination loss, providing a foundation for long-term stable module output. Full steel plate printing technology further reduces hot spot risk by lowering grid line resistance and improving grid line morphology consistency, supporting reliable module operation.

Leveraging the smart manufacturing capabilities of the world's first lighthouse factory in the global PV cell industry, Tongwei translates technological advantages into stable mass production capabilities. From cell-side technology upgrades to smart manufacturing system support, Tongwei continuously drives product capabilities from "technically achievable" to "stably mass-producible and verifiably deliverable."

From TNC 1.0 and TNC 2.0 to TNC 3.0, Tongwei has continuously driven the advancement of cell-side manufacturing technology. TPE 2.0 edge passivation technology, Poly Tech 2.0 patterning technology, and full steel plate printing technology provide important cell-side support for high-efficiency module value release across three dimensions: power release, bifacial power generation, and reliable performance.

Facing the new stage of the PV industry's transition from parameter competition to value competition, Tongwei will continue to take cell-side technological innovation as its source, more fully delivering high-efficiency capability, reliable quality, and power generation value to the module side, creating perceptible, quantifiable, and verifiable long-term returns for customers.