To successful collaborations

Become our partner

We are always on the lookout for reliable partners offering technical products and services. We work regularly with suppliers and service providers from the Hamburg region in our day-to-day business. We also collaborate with partners from all over Germany and Europe in the case of specialised trades, special products and projects. 

Should you wish to contribute to our continuous optimisation process in all procurement fields, please feel free to contact us and send us an email einkauf@holborn.de


General terms and conditions

Should you wish to familiarise yourself with our general terms and conditions of purchase in advance or in the event of any order, the documents are available to download here:  

Code of conduct

The Oilinvest Code of Conduct stipulates our rules of conduct for dealing with each other and with our partners and requires conduct corresponding to this code of conduct from our suppliers and service providers.