Treston Oy is a limited company based in Turku, registered in 2011. Its taxable income in 2024 was 254 t€ and its income taxes 52 t€. Public buyers bought 99 t€ from it in 2022–2026; the largest buyer is Tulli (Valtiovarainministeriön hallinnonala).
Taxes
Measured by taxable income, Treston Oy is in the top quarter of the industry class manufacture of other plastic products (136 companies with taxable income; median 77 t€, 3,3 times the median).
Taxable income is the profit as calculated for taxation, not revenue. Public data from the Finnish Tax Administration; figures for 2025 are published in November 2026. Revenue, financial ratios and employee numbers are shown once the company has filed its financial statements digitally.
Sales to public buyers
Largest buyers
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