Rongzun International Holdings Group Limited, an investment holding company, operates as a contractor that specializes in alteration and addition, and civil engineering works in Hong Kong. The company offers alteration and addition works, such as new structural works, fitting-out works, changes in facilities configuration, constructing a new extension to existing buildings, and conversion of an existing buildings to various types. It also provides civil engineering works, including site formation and foundation works, as well as provides administrative services. It primarily serves property asset management companies, property developers, and contractors. The company was formerly knowns as B & D Strategic Holdings Limited and changed its name to Rongzun International Holdings Group Limited in April 2024. Rongzun International Holdings Group Limited was founded in 1995 and is headquartered in Kwai Chung, Hong Kong.