Siewert & Kau
Siewert & Kau
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Siewert & Kau – Services

Rely on decades of experience and expertise.

About Siewert & Kau Services

Siewert & Kau looks back over 20 years of experience in the distribution business for IT products and in fulfilling the specific high demands of this area. We are proud of the scalable services we have created for our customers during this time.

By nature, the distribution business involves numerous services. In order to enable customers to take advantage of our many years of experience in this area, we founded Siewert & Kau Services.
Here, among other things, we offer you mature returns management, numerous eCommerce services and support in payment processing and marketing.

At Siewert & Kau Services, over 100 employees are available to meet your needs.

Siewert & Kau Services

Siewert & Kau Services offers a wide range of services for retail-specific topics. The portfolio ranges from returns management and back office to marketing and e-commerce services.

Our services at a glance


Returns management

  • Complete returns management from the one source
  • Warranty
  • Processing of manufacturer warranty
  • Returns processing
  • Testing and repair processing
  • Recovery
  • Remarketing

Contact partner:
Armin Muckenauer
+49 2271 763 200


Back office

  • Creditor and debtor bookkeeping
  • Dunning, cash collection
  • Organizational processing of all business processes
  • Payment processing (PayPal, credit cards)

Contact partner:
Manuela Frommont
+49 2271 763 0



  • Online/offline marketing measures
  • Event marketing
  • Newsletter dispatch

Contact partner:
Markus Plückbaum
+49 2271 763 144


eCommerce services

  • Returns management (returns labeling)
  • Shop solutions
  • Product management (texts/images for content preparation)
  • Online shop
  • Payment processing (PayPal, credit cards)
  • Interface management

All information regarding EDI – openTRANS 2.1
Siewert & Kau EDI – openTRANS 2.1 – At a glance

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