Timanttiporaus Teho Oy is a limited company based in Lohja, registered in 2015. Its taxable income in 2024 was 463 t€ and its income taxes 94 t€. Public buyers bought 200 € from it in 2025–2025; the largest buyer is Stara-liikelaitos, Helsinki (Helsinki).
Taxes
Measured by taxable income, Timanttiporaus Teho Oy is in the top 10 % of the industry class other miscellaneous specialised construction activities n.e.c. (1422 companies with taxable income; median 19 t€, 24 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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