Solartech International Holdings Limited (1166.HK) is an investment holding company principally engaged in the research, development, manufacture, and sale of solar energy products. The company offers a range of photovoltaic (PV) modules, including monocrystalline and polycrystalline silicon solar modules under its Solartech brand; solar cells; and related accessories such as inverters, mounting systems, and energy storage solutions. It provides engineering, procurement, and construction (EPC) services for solar power projects; operates solar power plants; and sells electricity generated from its facilities. Solartech serves residential, commercial, industrial, and utility-scale customers primarily in Mainland China, with additional operations in Hong Kong and select international markets. Founded in 2005 and headquartered in Dongguan, Guangdong Province, China, the company focuses on the renewable energy sector, emphasizing high-efficiency PV technologies and integrated solar solutions. In 2024, Solartech announced a strategic partnership with a leading battery manufacturer to enhance its energy storage offerings; completed the acquisition of a 100MW solar project in Inner Mongolia, expanding its power generation capacity; and launched a new series of bifacial PERC modules achieving over 22% efficiency, targeting export markets in Southeast Asia. These initiatives reflect the company's ongoing expansion into downstream power generation and advanced PV manufacturing amid China's push for carbon neutrality.