Complex sentence: In 1934, Eesti Kiviõli and New Consolidated Gold Fields established the service station chain Trustivapaa Bensiini (now: Teboil) in Finland which in 1940 sold more shale-oil-derived gasoline in Finland than did the entire conventional gasoline market in Estonia.
Split into simpler sentences: In 1934, Eesti Kiviõli and New Consolidated Gold Fields established the service station chain Trustivapaa Bensiini (now: Teboil) in Finland. During 1940 this chain sold more shale-oil-derived gasoline in Finland than did the entire conventional gasoline market in Estonia.