With its expertise and strong focus on innovation, the Group is the global leader in LED-based solar simulators. Eternal Sun focuses on module testing, and with the acquisition of Wavelabs in July 2025, the Group has expanded its activities into the adjacent cell testing market. Its customers include leading Western manufacturers of solar cells and panels, as well as top-tier research institutes.
The high-quality testing equipment of the Eternal Sun Group is critical for the development of next-generation solar technologies, quality control in the production process, pricing based on output testing, and verification by independent third parties. In doing so, the Group makes a significant contribution to technological advancement and value creation in the solar energy sector.
In addition to testing equipment, the Eternal Sun Group also provides import testing services and factory inspection services for major importers and project developers of solar panels. The company differentiates itself through its expertise in flash simulators and steady-state simulators, which measure the efficiency of solar cells and panels using short light pulses and continuous illumination, respectively. With a strong focus on innovation and customization, the Eternal Sun Group responds to technological developments and evolving testing requirements.
The Eternal Sun Group operates globally from seven locations across five countries.
