Information for potential and current suppliers

We have the claim of offering our customers the best solutions and of being one of the most innovative and important players in the market. For this reason, we look for long-term business relationships with suppliers in a reliable, honest and fair partnership.

Together, we can take advantage of our opportunities and further optimise the procurement. We continuously adapt to customer wishes and market conditions. For this purpose, we require partners who are ready to establish new goals with us and initiate change.

Product groups

You can see an overview of the production materials which Winkhaus purchases here.

Supplier portal

Our web-based supplier portal is provided for the exchange of drawings, enquiries and offers, as well as for transparent supplier evaluation. This is where you can enter the password-protected section. Only registered suppliers may access this section.

Zylinder Schlüssel Beschläge

Supplier application

Would you like to apply as a supplier? Please fill in the application form. Here we collect basic information about your company and make sure that we get you in touch with the right contact person.


Here you will find all documents available to you in the Procurement department.

Winkhaus Frau schreibt am Notebook

Returnable container system

Winkhaus works to preserve resources and the environment. In order to be able to eliminate disposable packaging, we use a returnable container system for procurement and sales.
In doing so, we collaborate with our logistics partner Comepack.
The basis of the Comepack system is a circuit of reusable and standardised pool containers, predominantly C-KLT 6421 and 4321. Winkhaus suppliers report their estimated sales for empties to Comepack by filling in data sheet D0 and send it via fax to Comepack. They then receive a preprinted order with a customer number.
Comepack supplies the containers within 5 work days of receiving the order and charges the supplier according to the prices agreed upon with Winkhaus. The supplier fills the load carrier with the sales parts and sends them to the Winkhaus plants. The supplier charges Winkhaus the purchase price of the container.
After the load carriers are emptied, they are sent to the Comepack depot for cleaning and are returned to the container pool. Comepack charges Winkhaus directly for this service.

Winkhaus Leergutkreislauf Comepack Nachhaltigkeit