Huiyuan Cowins Technology Group Limited, an investment holding company, manufactures and sells steel pipes, steel sheets, and other steel products in the People's Republic of China. The company operates in two segments, Steel and Service. It also offers piped potable water solutions; development and application of energy storage; and conservation of PCM technologies, alongside technology integration for facility farming. The company was formerly known as Mayer Holdings Limited and changed its name to Huiyuan Cowins Technology Group Limited in May 2025. Huiyuan Cowins Technology Group Limited was incorporated in 2003 and is headquartered in Causeway Bay, Hong Kong.