Overview
Deneco prefabricates and installs piping for industrial projects and provides specialist welding and steel component processing. The company works with carbon, low-alloy, acid-resistant and stainless steels, using client documentation or preparing its own execution documentation.
Financials
Revenue history (in k)
Data and insights are generated automatically based on financial statements and may contain errors. This analysis is for informational purposes only and does not constitute an official assessment of the company's credibility or business advice.
Statistics
How the company ranks by revenue within its industry, region and across Poland in 2024.
Results vs industry
Industry
Bank accounts
Registered as a VAT taxpayer on 2018-02-01.
20 2530 0008 2049 1085 3122 0001
22 1020 4900 0000 8102 3094 3726
25 1140 2004 0000 3902 7920 8249
Debt
3 active proceedings recorded in KRZ.
| Registration date | Proceeding type | Status | |
|---|---|---|---|
| Jul 31, 2025 | Proceedings after filing an arrangement approval application | In progress | |
| May 14, 2026 | Proceedings before the restructuring court under the Code of Civil Procedure | Closed | |
| Mar 4, 2025 | Arrangement approval proceedings | Closed |
Public aid
6 public aid cases recorded, with a total value of $79,566.
| Grant date | Purpose | Gross amount | Granting body | |
|---|---|---|---|---|
| Dec 20, 2023 | De minimis aid (in accordance with Commission Regulation No 1407/2013 or earlier) | $5,684$5,684 | Prezes Zakładu Ubezpieczeń Społecznych | |
| Jul 1, 2021 | De minimis aid (in accordance with Commission Regulation No 1407/2013 or earlier) | $1,864$1,864 | Prezes Zarządu Państwowego Funduszu Rehabilitacji Osób Niepełnosprawnych | |
| Jun 20, 2020 | Aid compensating for the negative economic consequences of COVID-19, granted in limited amounts | $4,478$4,478 | Prezes Zakładu Ubezpieczeń Społecznych |
Regulatory authorisations
| Authority | Type | Status | |
|---|---|---|---|
 BDO | BDO register entry | Active |
Authorized Representatives
Manner of representation
In the case of a multi-member management board, two members of the management board acting jointly, or a member of the management board jointly with a commercial proxy, are authorized to make declarations of will on behalf of the company. In the case of a one-person management board, the President of the Management Board is authorized to make declarations of will on behalf of the company independently.
Ownership
| Owner | Shares | Share value | Stake |
|---|---|---|---|
Anna Jaroszewska (47) | 50 | $675.31 | 25% |
Antonina Jaroszewska | 50 | $675.31 | 25% |
Konrad Jaroszewski (18) | 50 | $675.31 | 25% |
Wojciech Alfred Kaliszewski (52) | 50 | $675.31 | 25% |
Anna Jaroszewska, Antonina Jaroszewska and Konrad Jaroszewski hold a combined 75% – the ownership structure indicates family control.
Beneficial owners
| Person | Rights |
|---|---|
Competitors
| Name | Revenue | Website | ||
|---|---|---|---|---|
| Stalmet Konstrukcjesp. z o.o. | $3,540,867.18 | stalmet-konstrukcje.pl | ||
| Metalpref Tradesp. z o.o. | $3,086,603.02 | metalpreftrade.pl | ||
| Railsystems AgicoS.K.A. | $2,346,280.14 | agico.com.pl | ||
| Rurkesp. z o.o. | $1,831,368.25 | rurke.pl | ||
| IRON Workerssp. z o.o. | $1,717,788.18 | ironworkers.pl | ||
| Scanstalsp. z o.o. | $1,634,026.59 | scanstal.pl | ||
| Ewikor Constructionsp. z o.o. | $1,577,630.87 | ewikor.pl | ||
| Roto-Toolssp. z o.o. | $1,535,105.60 | roto-tools.pl | ||
| PRO-Montsp. z o.o. | $1,489,709.12 | pro-mont.pl | ||
| Stal & Systemsp. z o.o. | $1,064,210.17 | stalsystem.pl |
Change history
| Date | Event | |
|---|---|---|
| 2024-01-25 | Address change (Ul. Na Ostrowiu 3, 80-873, Gdańsk → Ul. Siennicka 28b, 80-758, Gdańsk) | |
| 2019-02-26 | Address change (Ul. Marynarki Polskiej 96, 80-955, Gdańsk → Ul. Na Ostrowiu 3, 80-873, Gdańsk) | |
| 2017-10-24 | Entered in the register |
FAQ
Last updated: 2026-04-26