Groningen, Netherlands — Est. 2015
Creating
online ventures
that last.
Grunius transforms ideas into excellent services and innovative products — bridging education, science, and business through IT and innovation.
Deliver the most reliable solutions to help clients improve their efficiency and business profitability.
From concept to launch
We work with ambitious teams and talented professionals to build ventures with lasting impact.
Business Development
Strategic guidance to establish and grow your business, from market entry to sustainable scaling.
Software Development
End-to-end software solutions built for reliability and performance, from architecture to deployment.
Project Incubation
We incubate projects from talented professionals, providing the structure and resources needed to succeed.
International Ventures
Connecting Dutch innovation with global opportunity and guiding ventures through international expansion.
Built in Groningen.
Thinking globally.
Grunius BV is a Netherlands-based business development group founded to transform ideas into services and products. We operate at the intersection of education, science, and business — bringing together the disciplines needed to build ventures that endure.
Registered with the Dutch Chamber of Commerce and headquartered in Groningen, we combine local expertise with an international outlook to serve clients across Europe and beyond.
Companies we build
Grunius incubates and operates companies at the intersection of industry and technology.
PartnerPLC
A Grunius Company
PartnerPLC specialises in sourcing hard-to-find industrial electronics — the discontinued, obsolete, and long-lead-time components that bring production lines to a halt. From new stock to quality-tested refurbished parts, they get manufacturers back up and running fast.
By extending the life of industrial electronics, PartnerPLC helps reduce e-waste and supports a more sustainable industry.
- Programmable Logic Controllers (PLCs)
- Industrial PCs & CPU modules
- Frequency drives & controllers
- I/O modules & control systems
- Refurbished automation equipment
PartnerTubes
A Grunius Company
PartnerTubes is a global distributor of vacuum electronic devices — magnetrons, RF power grid tubes, microwave tubes, and vacuum capacitors. Serving 40+ countries with 10,000+ part numbers stocked and 75+ years of industry expertise.
By extending the service life of vacuum tubes and specialist electronics, PartnerTubes supports sustainable operations in medical, defence, industrial, and scientific applications worldwide.
- Magnetrons (CW & pulsed units)
- RF power grid tubes (triodes, tetrodes)
- Vacuum capacitors & high-voltage devices
- Microwave tubes (klystrons, TWTs)
- Laser parts (CO₂, excimer, gas)
- Thyratrons, ignitrons & rectifier tubes
PartnerValves
A Grunius Company
PartnerValves specialises in sourcing new, used, and refurbished industrial valves — including hard-to-find and discontinued models. Serving process industries, oil & gas, chemical plants, water treatment, and power generation across Europe.
By extending the service life of industrial valves and reducing the need for full system replacements, PartnerValves supports more sustainable operations across process industries.
- Ball, gate & butterfly valves
- Control & solenoid valves
- Check valves & safety valves
- Valve actuators & positioners
- Refurbished process valves
PLCSearch
A Grunius Company
PLCSearch lets buyers search and compare PLC and automation part availability across multiple distributors and suppliers in one place, cutting sourcing time for hard-to-find components.
By surfacing existing stock across the supply chain instead of triggering new production, PLCSearch helps buyers extend the life of industrial electronics and reduce unnecessary e-waste.
- Programmable Logic Controllers (PLCs)
- Industrial PCs & CPU modules
- Frequency drives & controllers
- I/O modules & control systems
- Refurbished automation equipment
PartnerGeometrics
A Grunius Company
PartnerGeometrics is a global distributor of precision measurement and geophysical survey equipment — coordinate measuring machines, laser trackers, magnetometers, gravimeters, and ground-penetrating radar. Instruments are sourced new, refurbished, or certified from 150+ brands and shipped to 40+ countries.
By supplying refurbished and certified instruments alongside ISO 17025-traceable calibration services, PartnerGeometrics extends the working life of precision equipment and reduces unnecessary e-waste.
- Coordinate measuring machines (CMMs)
- Optical & vision measuring systems
- Laser trackers & form/surface testers
- Magnetometers, gravimeters & seismographs
- Ground penetrating radar & resistivity/IP systems
- ISO 17025-traceable calibration services
Building for the long term.
Grunius BV is a privately held business development company, building specialist B2B businesses in industrial supply.
We identify underserved industrial supply niches — where demand is persistent, digital adoption is low, and specialist knowledge commands a premium — then build focused B2B businesses to serve them.
Grunius BV is the Netherlands-registered holding entity. Each portfolio company operates as an independent brand with its own team and customer base, supported by shared operational infrastructure.
Grunius is not publicly traded. For investment, partnership, or acquisition discussions, please contact us directly.
info@grunius.com →Let’s talk.
Ready to start a project or explore a collaboration? We respond to every inquiry.