By Sean Carney

PRAGUE--Czech petrochemicals group Unipetrol AS (BAAUNIPE.PR) Thursday said it returned to profit in the first three months of the year after five straight loss-making quarters as first-quarter sales improved on an annual basis in all segments.

Key Points

-Unipetrol posted a net profit of 937 million koruna ($47.2 million) in the first quarter, compared with a CZK148 million net loss a year earlier.

-The company posted revenue of CZK28.81 billion in the period, up 16% on year.

-‎Overall sales were driven by higher refining volumes thanks to Unipetrol increasing its majority stake in Ceska Rafinerska AS, the Czech Republic's largest refinery, in January.

-Retail sales were helped by the Czech government recently enacting legislation that cracks down on illegal, tax-free sales of motor fuels in competing independent filling stations, the company said.

‎-Unipetrol is majority-owned by Poland's PKN Orlen SA.

Write to Sean Carney at sean.carney@wsj.com

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