qtsd is a brand name. According to the query of relevant public information, Zhengzhou Jingjing Clothing Co., Ltd. applied for the trademark name of the 26th category button zipper in 20200121, so qtsd is a trademark name. Zhengzhou Jingjing Clothing Co., Ltd. has a registered capital of 1 million yuan and is located in Building 401, Building E15, Jinrong Yitianxia Industrial Park, Quliang Town, Xinmi City, Zhengzhou City, Henan Province. Its business scope: the design, production and sales of clothing and clothing accessories.