The first method:
Enter the account of JD.COM Mall, drop down "Customer Service" and click "Online Customer Service".
The second method:
Enter the account of JD.COM Mall, select the goods you like, and the detailed information of the goods will appear. You can see, online customer service, contact customer service, company name, address, etc. , and click "Contact Customer Service".
The third method:
Enter the account of JD.COM Mall, select your favorite products to the product details page. If you don't find the words "Contact Customer Service", drop it down to the bottom of the page and click "Publish Consultation".