DR (trademark registration number: 14271650), the full name of Darry Ring (trademark registration number: 14472759), is a romantic engagement diamond ring brand, affiliated to Dia Co., Ltd. It always interprets the brand concept of "lifetime, only, true love" with the unique customization model of "men can only customize one piece in their lifetime". DR aims to provide every lover with the perfect diamond ring, leading the trend of true love with a young, fashionable and luxurious brand style.

DR diamond rings’ romantic interpretation of love makes all girls around the world fall in love with them. DR diamond ring is the first in the world to create a legendary agreement: each man can only customize one in his lifetime with his ID card, which means "you can only love one person in your life."

DR’s unique meaning of true love leads the fashion proposal culture. Behind the proposal ceremony, women not only need to find cherished romance, but also long for a DR-style only true love in their lives. Proposal can be said to be an indispensable sacred ceremony in love. It is the best fantasy and expectation in every woman's heart, and it also symbolizes the beginning of the married life of two people.