Helium is an inert gas and safer than hydrogen balloons. When in use, balloon protection can increase the floating time. Nanjing Guanghua Gas can be filled with helium, and the number of balloons filled with 10 liter of helium is as follows:

5 inch latex ball: 820; 10 inch latex ball: 290; 12 inch latex ball:110; 18 inch latex ball: 40; 18 inch aluminum foil balloon: 95; 24 inch aluminum foil balloon: 45; 18 inch bobballs:65；; 24 inch bubble ball: 35

Attachment: According to the different methods of operators, the number of balloons filled is also different, for reference only.