Not in Linfen. Linfen is a prefecture-level city and sub-central city in Shanxi Province, located in the southwest of Shanxi Province. According to official website's inquiry about dr diamond ring, Linfen has no physical store of dr diamond ring, which can be purchased online. DR, an international high-end marriage proposal diamond ring brand under Dia Co., Ltd., set a globally unified romantic rule at the beginning of its establishment: a man can only customize one with his ID card in his life, which means the only true love in his life.