Rough Trade Deutschland was not a label but a marketing name that Rough Trade Records used in Germany between 1982 and 1983. However, this name was later used by some foreign labels as name for their German, Austria and Switzerland (GAS) licensee and distributor.
Only use if indeed stated as such on the release.
For the label, use Rough Trade
. For the record company, licensee, distributor or rights owner, use Rough Trade Records GmbH
or Rough Trade Records
(depending on what is specifically found on the release).