it's the same bootleg label who - under different names in the past released several other CDs, for example:
-Limelight and Heavy Load under the label's name Flawed Gems
-Tygers Of Pan Tang, Satan, Jaguar, Tank, Heavy Load (again...) under the label's name Heavy Sounds
-Black Sabbath, Iron Maiden and lot other under the label's name Top Gear
and tons of 70's rock/psych rock under the same labels or other names
plus I am surely forgetting many other releases under other label's names, but it's always the same label: same layout, same packaging, same disc quality, same fonts, same everything.
They are all available at www.megadisc.pl
which make me think it's either a polish or a russian bootleg label