excuse me if I open this discussion. if I can ask, at an industrial site machinery used, I saw the German zeppelin excavators brand as the famous German airship, I think they are Germans, built in Germany, but the network did not find technical and performance information on these machines. what do you know about excavators "German zeppelin? maybe it was absorbed by caterpillar? are reliable durable sturdy? what you think, thanks to those who want to provide experiences and opinions