Huiyuan Cowins Technology Group Limited (1116.HK) is a Hong Kong-listed investment holding company primarily engaged in the manufacturing, processing, trading, and distribution of steel products, including stainless steel pipes, fittings, manifolds, and carbon steel pipes; steel plate cutting and processing services; water purification technologies featuring piped direct drinking water systems with IoT management; innovative nanoscale phase-change energy storage solutions for cold and heat storage; and diversified stainless steel products such as water tanks, bathroom items, custom cabinets, kitchenware, integrated cookers, intelligent locks, and water purifiers. The company operates principally in the People's Republic of China, with additional activities in Vietnam, and exports products internationally to serve construction, industrial, hospitality, and consumer markets. Founded in 1995 as Guangzhou Mayer Metal Products Co., Ltd. and publicly listed on the Hong Kong Stock Exchange in 2004, it is headquartered at 21/F, World Trade Centre, 280 Gloucester Road, Causeway Bay, Hong Kong.
In August 2025, the company rebranded from Mayer Holdings Limited to Huiyuan Cowins Technology Group Limited and relocated its headquarters to enhance its focus on innovation and strategic expansion into smart energy storage from traditional steel manufacturing. Recent developments include active promotion of nanophase-change technology at industry exhibitions such as the 5th International Air Conditioning, Ventilation and Cold Chain Industry Exhibition in October 2025 and BEX Asia 2025; signing of the "Green Partner Program" with Yonghe Subdistrict for green development initiatives; participation in compiling group standards for high-quality industry advancement; and government-industry-academia-research collaborations to industrialize energy storage technologies aligned with China's new-quality productive forces strategy. The group continues to deepen international market penetration through global trade fairs like the Canton Fair, while maintaining its core steel business as the operational foundation alongside emerging high-tech segments.