Ketjureaktio Oy is a limited company based in Helsinki, registered in 2020. Public buyers bought 296 € from it in 2025–2025; the largest buyer is Geologian tutkimuskeskus (Työ- ja elinkeinoministeriön hallinnonala).
Taxes
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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