Nasdaq Listing and Fair Value, page-49

I did some research on Linde transportation of He. Customers must ensure that around 200 kilograms of helium is left in the HELICS tank in order to keep the tank cold enough for a direct refill. The cooling-down procedure needed for brand new tanks can take up to 14 days to complete and consumes a lot of energy. This step is necessary, however, to ensure that the HELICS tanks are able to keep the inert gas at an ultra-low-temperature in liquid form for a couple of weeks. So if the container is new the cooling down process alone is 2 weeks.