Taobao, JD.com, Tmall, Pinduoduo.

1. Taobao announced on June 5, 2020, that it would form a supply industry chain with Douyin. It is the leading online personal trading platform in China and was founded by Alibaba, the world's best company.

2. JD.com announced on March 7, 2021 that it would form a supply industry chain with Douyin. It is a self-operated e-commerce company in China. Its founder Liu Qiangdong serves as the chairman of the board of directors of JD.com Group.

3. Tmall announced on May 7, 2021 that it would form a supply industry chain with Douyin, which is a trading sub-brand founded by Alibaba.

4. Pinduoduo announced on January 2, 2022, that it would form a supply industry chain with Douyin. It is a locally grown Internet company in Shanghai and has created a new model of agricultural product retail featuring Pinduoduo.