The portfolio expanded and the company “Dr Ing Erich Dinglinger” was able to establish itself better and better on the market, due to which the company needed more space. The decision was made: In 1962, an extension was built and a centre for filter technology was created.
POLO was the first supplier of self-cleaning backwash filters, as a result of the demand for watch-free operation on overseas vessels.
The “Dr IngErich Dinglinger” company was transformed into a limited partnership.
Changes in the economy caused an expansion into another important sector of the economy, the machine tool industry and its users. In the mid-seventies, POLO offered the patented suction belt drum filter, a compact device that worked with fleece and was predestined for machine tools. This is an important step in the direction of environmental protection.
In this year, the subsidiary “POLO Filter-Technik Bremen GmbH” was founded.
CAD systems replaced the drafting machines and the workforce grew to 23 employees.