Hellon Oy
In brief
Hellon Oy is a limited company registered in Finland on 4 September 2007. At 19 years old it is older than 65% of the 3,007 live companies whose main activity is all other miscellaneous professional, scientific and technical activities n.e.c.. Its registered office is in Helsinki, Uusimaa, at an address shared with one other live company. 956 live companies in Helsinki share the same main activity. It was previously called Diagonal Mental Structure Oy, a name it changed on 1 October 2015.
Register details
Timeline
Register events, newest first.
- Name changedPreviously Diagonal Mental Structure Oy
- Incorporated
Register entries
From the register.
All other miscellaneous professional, scientific and technical activities n.e.c. in Finland
Live companies whose main activity is 74999: 3,007 in total, median age 10 years, 174 incorporated in the past 12 months.
Location
Registered office in Helsinki, Uusimaa.
Also registered at this address
1 other live company shares this registered office.
- CSChep Scandinavia B.V., sivuliike Suomessa1074291-3 · Est. 1997 · 77120
Similar companies
Live companies with the same main activity, nearest first.
Sources
Register data: Finnish Patent and Registration Office (PRH) open data (CC BY 4.0), delivery of 20 October 2026. Municipalities, regions and industry classification: Statistics Finland (CC BY 4.0). Context figures are computed by FirmsDB from these sources. This page is not an official register; check the company's entry in the Finnish Business Information System before relying on it.