technically:
All ships are using H-Fuel. Deuterium is a kind of H-Fuel, along with the theoretical Tritium (heavy, heavy water). They need it for their Fusion engines. The colors are just to give the houseships a bit more style.
For the ignition of a fusion, a very small atomic explosion is needed. Therefore you have the Plutonium.
To create Plutonium you need Uranium oxid, called as MOX.
ALG is recycling poisoned trash to get MOX and they do cleansing the RM wrecks in Sigma 13, where they get the Plutonium from the old reactors, while BMM is mining the Uranium asteroids around LD 14.
Krueger is mining gas from planet Heidelberg and Samura is transporting H-Fuel from Osaka depot to Mainz depot, where Rep. Ship. is overtaking the freight.
Bretonia is the only colony, which should have a shortage of H-Fuel, because they got their deliveries from Kusari before the war.
Hope this is clear now.
I would consider GMG and Rheinland unfriendly, but not hostile, especially since Rheinland is more on the side of Kusari.
Thanks ALG, Rheinland is, along with Kusari the cleanest colony, so they never would use a dirtier mixture. Look for Leeds and you will know who would use the dirtiest mixture in sirius. Also take a look for New York and Texas and their large fields of scrap.
Somewhen ALG will be the ruling company, because of their progressive recycling technologies.
