This liquid substance is considered one of the important basics that are highly relied upon in prolonging the flight time of rubber balloons to 25 times the normal flight period in high-quality (QUALATEX) balloons, where the flight duration exceeds in cold to cold temperatures (18-25) for 10 consecutive days ..
Which gives your balloons high durability against gravity..
To maintain the level of helium inside it.. for a longer period
(for rubber only)