Online malls, physical stores, and official channels.

1. Online mall: You can search for Haixin Pure Music car USB flash drive on major e-commerce platforms, such as Taobao, JD.com, Tmall, etc., and choose a store with high credibility and good reviews to purchase.

2. Physical stores: You can go to some physical stores such as audio-visual and electronic product stores or supermarkets, such as Gome, Suning, etc.

3. Official channels: The official website of Haixin Pure Music also has information on the sale of Haixin Pure Music car USB flash drives. You can go to the official website to learn about and purchase.