Amazon is an American cross-border e-commerce platform established in 1995. At the beginning, it only operated online book sales business, but now it has expanded to a wide range of other products. It has become the world's largest online retailer and the world's second largest Internet company. Amazon and other sellers provide customers with millions of unique new, refurbished and second-hand products, such as books, movies, music and games, digital downloads, electronics and computers, home and garden products, toys, baby products, food, clothing, shoes and jewelry, health and personal care products, sports and outdoor products, toys, automobiles and industrial products, etc.