Taobao, Pinduoduo and so on. Cos clothing is the clothing used in cosplay process, which generally refers to role clothing. Because the practical frequency of this role costume is very low, it is usually worn only once, so many people choose to rent it when they wear it. Taobao, Pinduoduo and other platforms not only provide commodity sales services, but also provide commodity rental services, such as wedding dress rental, dress rental, cos clothing and so on. Taobao's platform includes mobile phone, film and television, clothing rental, and Pinduoduo's platform includes easy clothes and clothes.