pinduoduo seller sign up is a process that allows businesses to join Pinduoduo, a popular Chinese e-commerce platform, as a seller. To sign up, sellers must create an account, provide business information, and meet specific criteria set by Pinduoduo. Once registered, sellers can list products and start selling to millions of potential customers. Pinduoduo is known for its social commerce model, which encourages group buying and offers competitive pricing, making it an attractive platform for businesses targeting Chinese consumers.