Dinghui Technology Co., Ltd. brand. Dinghui Technology Co., Ltd. was established on December 1, 2022, and its registered address is located at Liyuan Road, Huangpu District, Shanghai. The dvip brand is a general trademark applied for registration by Dinghui Technology Co., Ltd. on November 22, 2017. The international classification of this trademark is 09 Scientific Instruments, and the agency is Guangzhou Tianzhe Intellectual Property Agency Co., Ltd.