Tse Sui Luen Jewellery (International) Ltd. is an investment holding company, which engages in the design, manufacture, and sale of jewelry products. It operates through the following segments: Retail Business, Wholesale Business, and Other Businesses. The Retail Business includes direct retail sale of jewelry products to end consumers through the physical outlets carrying the trademark of TSL. The Wholesale Business segment pertains to wholesale of jewelry products to customers. The Other Businesses segment comprises of electronic business platforms including VIP.com, T-Mall, JD.com, Amazon.cn, Taobao, and Jumei.com. The company was founded by Sui Luen Tse in 1971 and is headquartered in Hong Kong.