Alibaba

Alibaba is the world's largest B2B e-commerce marketplace and the Chinese e-commerce behemoth. Its market capitalization just surpassed $400 billion, and it now accounts for 80% of all online sales in China.

Alibaba sells about 100 million products across 40 different categories in 200 countries. On a single marketplace platform, it connects Chinese wholesalers with roughly 200 enterprises from across the world.

Suppliers produce and sell large quantities of products to purchasers searching for inventory for their businesses.

AliExpress, TMall, and Taobao are among the company's other massive and very popular e-commerce platforms.