Xinda Investment Holdings Limited, together with its subsidiaries, engages in the smart energy and public infrastructure construction businesses in the People's Republic of China. The company's Smart Energy segment operates solar power plants; sells household solar power generation systems; offers industrial chain services, including multi-energy complementation of electricity, heat, and gas; smart operation and maintenance; energy trade; energy efficiency analysis to industrial, commercial, residential, and public institutions. Its Public Infrastructure Construction segment is involved in the construction and related preliminary investment businesses, as well as provides post-construction, operation, and management services of public infrastructure under the Baoding Donghu Project in Baoding City of Hebei Province. The company was formerly known as LongiTech Smart Energy Holding Limited and changed its name to Xinda Investment Holdings Limited in August 2022. Xinda Investment Holdings Limited was incorporated in 2011 and is headquartered in Gaobeidian, China.