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 interior wall-fill materials comprising gypsum block and drywall partition products; interior composite panel lining products that include SPC wall panels; timber flooring; roof tiles; and woodwork products. The company also offers floor heating system, smart indoor air purification system, and relevant installation services. It primarily 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.