If they are available in Germany/Austria would you be so kind as to let me know some details, I know several UK divers that would like to get their hands in 15 litre 300 bar cylinders.
Here: Stahlflasche 15L Breathing Apparatus 300 bar Flaschenhalsgewinde M25
If you are stuck in the German, I can help out....
That guy sells also over amazon.de and has almost only positive feedback.
I once contacted him for the coltri compressor and got an answer pretty fast. So my first impression is good....
I think I buy one and import on my regular seafreights. If someone want to join I can purchase and import more and also handle all the customs over my company.
But it would need AT LEAST 2-3 month to have it here. As well I would need a small deposit and a document with signature which tells that we just handle the shipping and we are not responsible for any warranty or injuries/deads when using it.
As well I don't know if there are any special regulations on tanks in Thai law. But if I can help someone on the import than I do....