An exceptional tool designed for seamlessly connecting string harnesses to combiner boxes or string inverters. The conversion of copper to aluminum requires breakthroughs through collaborative innovation in materials science, process engineering and standardized design. With the popularization of international standards, the reliability and economy of aluminum conductor photovoltaic cables will be further improved, becoming the mainstream choice for green energy transmission. SUNKEAN's copper-aluminum connection solution breaks through traditional connection processes, independently develops welding methods and coating designs, and gives the product a 25-year service life.