Overview
DHO Service provides mobile welding services for transmission pipelines, industrial installations, tanks and steam boilers. It welds using methods 141, 141/136 and 141/111, with qualifications certified by UDT-CERT HL045 for groups FM1–FM4.
Financials
Revenue history (in k)
Filing timeliness
Financial statements were filed on time, on average 51 days early.
- 202519/06/2026
- 202423/05/2025
- 202313/05/2024
- 202213/06/2023
- 202126/04/2022
Data and insights are generated automatically from financial statements – they may contain errors and are neither a credit assessment nor business advice.
Statistics
How the company ranks by revenue within its industry, region and across Poland in 2025.
Results vs industry
Industry
Offer
- Mobile welding services
- Pipeline welding
- Industrial installation welding
- Tank welding
- Steam boiler welding
Website technology
- Online shop
- WooCommerce
- Website
- WordPress
- Elementor
Authorized Representatives
Manner of representation
To submit declarations of will on behalf of the company, in the case of a one-person management board, the President of the Management Board of the company acting independently is authorised. In the case of establishing a multi-member management board, where a right is disposed of or a liability is incurred in an amount not exceeding PLN 50,000.00 in a single instance, declarations of will on behalf of the company are submitted by each member of the management board of the company acting independently, and where a liability is incurred in an amount exceeding PLN 50,000.00 in a single instance, declarations of will on behalf of the company are submitted by: the President of the Management Board of the company acting independently, or two members of the management board of the company acting jointly.
Ownership
| Owner | Shares | Share value | Stake |
|---|---|---|---|
Edyta Joanna Olszewskaage 37 | 9 | $121.56 | 9% |
Damian Hubert Olszewskiage 44 | 91 | $1,229.07 | 91% |
Damian Hubert Olszewski and Edyta Joanna Olszewska hold a combined 100% – the ownership structure indicates family control.
Beneficial owners
| Person | Rights |
|---|---|
Bank accounts
Registered as a VAT taxpayer on 2021-04-23.
50 1020 1390 0000 6402 0666 5683
Debt
No entries in the National Debtors Register (KRZ).
Public aid
No public aid cases recorded in the last 10 years.
Competitors
| Name | Revenue | Website | ||
|---|---|---|---|---|
| Wiatremsp. z o.o. | $1,109,915.45 | wiatrem.tech | ||
| Wwtech Hydrosp. z o.o. | $1,069,539.22 | wwtech.com.pl | ||
| Weld-Prosp. z o.o. | $543,777.70 | weld-pro.com.pl | ||
| BJB Services Borkowskisp. k. | $527,444.87 | bjbservices.eu | ||
| Hydrotestsp. z o.o. | $471,644.69 | hydrotest.pl | ||
| One Weldersp. z o.o. | $285,450.30 | onewelder.pl | ||
| JM Hoistsp. z o.o. | $160,816.06 | jmhoist.pl | ||
| DID Partnersp. z o.o. | $136,268.77 | didpartner.pl | ||
| DNC Prosp. z o.o. | $117,267.41 | dnc-pro.pl | ||
| Diasporasp. z o.o. | $77,123.95 | diasporaeurope.com |
FAQ
Last updated: 2026-06-19