20 16. Chow Tai Fook is the largest jewelry company listed in Hong Kong, specializing in Chow Tai Fook brand jewelry, jade and gold ornaments. Is a comprehensive enterprise integrating raw material procurement, production design and retail service, and is the most famous and largest jewelry brand in China. In 20 16, Chow Tai Fook combined the advantages of vertically integrated business model to launch TMARK diamonds with exclusive logo and traceable diamond history, and put forward the concept of traceability, transparency, trustworthiness and admiration. From the traditional diamond standard to the expression of connotation, it is a combination of traditional jewelry and internet plus. In 2066,