To improve the ability of independent R&D, grasp the future development opportunities of core technologies, products and application fields, and strengthen its core competitiveness, Tongwei has established PV technology centers based on the scientific research systems covering all PV business sectors, and set up scientific research and technology teams led by industry experts, working to comprehensively promote technological R&D and technology integration in all links of the photovoltaic industry chain.

In terms of solar cells, Tongwei has gained a number of technical achievements with independent intellectual property rights in core technology fields such as atomic layer deposition back-passivation, selective emitter technology, bifacial solar cell, multiple busbars, TOPCon cells, and HJT cells. On the one hand, TW Solar focuses on the current mainstream PERC technology, and improves and optimizes it by adding other process technologies (such as multiple busbars, high-resistance and dense grid , alkali polishing, etc.) to improve conversion efficiency and reduce production costs. On the other hand, TW Solar continues to increase investment in following and R&D of new PV technologies. Now, the mass production conversion efficiency of both HJT and TOPCon cells is at the leading level in the industry.