Twintek Investment Holdings Limited, an investment holding company, engages in the sale of building materials; and provision of construction and engineering services in Hong Kong. The company operates through Sales of Building Materials; and Construction Contracts segments. Its products include timber flooring; interior wall-fill materials comprising gypsum block, plasterboard, and drywall partition products; interior composite panel lining products that include SPC wall panels; demountable partition systems; and roof tiles. The company also offers floor heating systems, smart indoor air purification systems, and installation services; trades in building materials; and is involved in property investment activities. It serves contractors. The company was founded in 1980 and is headquartered in Quarry Bay, Hong Kong. Twintek Investment Holdings Limited is a subsidiary of Helios Enterprise Holding Limited.