In 2023, Kehua supplied photovoltaic inverters for a 10 MW solar power system at Promet-Plast in Oława, Poland, making it the first zero-carbon emission medical supply manufacturer in the country. The factory's multi-energy system incorporates solar power, wind energy, hydrogen production, and lithium battery storage, achieving a complete shift to renewable energy. The project is expected to generate 8,800 MWh of electricity annually, saving on electricity costs due to the high efficiency of Kehua's inverters. The use of Kehua's SPI100-125K-B series inverters with advanced communication pathways ensures accurate system monitoring, maximizing solar energy utilization. These inverters support up to 9 MPPT and 18 string, with protection mechanisms like temperature and surge protection. The success of the project highlights Kehua's dedication to sustainable solutions and commitment to green development worldwide.