We work on regional sustainability on a daily basis. We do this together with our partners. We are looking for innovative solutions and consider quality to be of paramount importance. That is why we make clear agreements with our suppliers.

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We purchase carefully and transparently. We publish public tenders via Negometrix. Click here for an overview of current tenders. Twence has a complaints procedure for handling complaints during and after the tendering process. Complaints can be submitted via the contact form.

Purchase conditions

Download our general purchasing conditions and our logistics purchasing conditions for more information.


  1. General Terms and Conditions of Purchase Download
  2. Logistics procurement terms Download
  3. General Terms and Conditions Download

Please contact us

Questions about tender or delivery terms

Do you have questions about a tender or about the terms of delivery? Then please fill in the form. We will contact you as soon as possible.

Response within 2 working days