Tse Sui Luen Jewellery (International) Limited, an investment holding company, manufactures, sells, and markets jewelry products in Hong Kong, Macau, Mainland China, and internationally. The company operates through Retail Business, Wholesale Business, E-Business, and Other Businesses segments. It is involved in the manufacturing, distributing, and franchising jewelry; sale of jewelry products through e-commerce platforms; and property holding and investment businesses. The company also engages in trademarks holding and investment; cash management; and management and administrative services, as well as involved in logistic and supply chain management activities.