To buy dry ice, you can go to Hanna Dry Ice Factory. This national chain has a very wide range of delivery services, and you can buy it in Beijing, Qingdao, Guangzhou, Changsha, Xi 'an, Jiangsu, Zhejiang and Shanghai. It's very convenient. You can call the national unified free hotline 4116878698 to check, or you can open the webpage /network.html to see if there is any area you need. As for the price, each area is slightly different. Specific website: /news_list.asp? Id=118 I hope I can help you.