DR (trademark registration number: 1427 1650) is a romantic proposal diamond ring brand, which belongs to Dia Co., Ltd. The brand concept of "one love for life" has always been interpreted by the unique customization mode of "a man can only customize one in his life". DR aims to provide the perfect diamond ring for every lover and lead the trend of true love with the brand style of youth, fashion and luxury.

Chow Tai Fook (stock code: 1929) is the largest jewelry company listed in Hong Kong, mainly engaged in Chow Tai Fook brand jewelry, jade and gold ornaments. Is a comprehensive operation enterprise integrating raw material procurement, production design and retail service, and is the most famous and largest jewelry brand in China.