About us

Who We Are?

Holland Stores Oilfield Supply and Services GmbH is operated by a highly dedicated team of decades’ expertise as a mud pump parts specialist in the market for oil and gas industry such as conventional, geothermal and horizontal directional drilling.

Holland Stores OSS was firstly founded in Den Helder, the Netherlands in 1988, by current managing director Mr. Fred W. Koenen and Mr. Harry Verswijveren. Den Helder is an important seaport for the offshore activities of the Netherlands, also it have an open connection to the North Sea. The company grew with supplying and providing services to the drilling rigs on the North Sea, and drilling rigs onshore in the Netherlands & Germany. It slowly gained its name in the market through a efficient and professional way of work. In 2004 the company opened another branch nearby the German-Dutch border, with premises of more than 4300m2 in the industrial area of Gildehaus, Germany.


Our Team

  • Frederik W. Koenen
    Managing Director

    Fred has been leading the company successfully for many years.

  • Harry Verswijveren
    Head Sales Manager

    Harry is responsible for everything around the purchasing- and sales department.

  • Jing Zhang
    Graduate Engineer

    Jing ensures that the high quality standard is maintained.

  • Andrea Scholten
    Accounts Department

    For financial questions, please contact Andrea!

  • René Rathman
    Sales Department

    Do you have questions about API standarts, availability of materials, delivery time or prises? Please contact René.

  • Heiko Fryen
    Sales Department

    Do you have questions about availability of materials, delivery time or prises? Please contact Heiko.

  • Max Getz
    Warehouse Manager

    Max is responsible for everything around the warehouse.

  • Broes Koenen
    Technical Support, Warehousing Employee

    You need technical support? Broes will help you out!