Prepare several bottles in advance, pour water into the bottles and put them in the refrigerator for quick freezing. Find a foam box with a lid after freezing, preferably. A treasure can buy one online. ) If you DIy, you can make a cotton mattress. The ice bottle is put in the foam box, and the mahjong is put in it. Cover with a small cotton mattress or foam matching box prepared in advance. You can also cover the box with a small mattress to keep it warm. No matter how it is iced and beautified, it can effectively reduce the deterioration of sesame paste, which will not deteriorate during normal business hours and can be used normally. Please don't forget to adopt it if it helps. Thank you. I wish you good luck in your work and your financial resources are rolling in.