Taobao, Tmall, and 1688 are all companies under Alibaba, all engaged in e-commerce business, and all third-party platforms. The main differences are as follows:

1. Taobao: It is basically C2C-based, just like a collective market. Everyone can buy and sell anything they have.

2. Tmall is like a large shopping mall, a sales platform for merchants, with special stores or authorized dealers of various large corporate factories in the plaza. Basically, B2C is the mainstream. There are threshold requirements for entering Tmall.

3. Alibaba 1688 is a wholesale market. It is mainly positioned as B2B, and is mainly based on corporate procurement behavior.