Trademarks. The trademark Qingtiange was applied for registration by Shanghai Four Seasons Cultural Communication Co., Ltd. on September 22, 2017, and was successfully registered on September 7, 2018. This trademark was applied for under the name of the company, and the type is Category 9 scientific instruments. . Shanghai Four Seasons Cultural Communication Co., Ltd. was established on May 9, 2017. Its registered address is Room J950, ??No. 500, Xincheng Road, Jiading District, Shanghai. Its legal representative is Chen Xiaotian.