The certificate was issued to the Centrosolar subsidiary by the VDE Testing and Certification Institute.
Stefan Liedtke, managing director of Renusol GmbH, said: “We are constantly working towards optimising the quality of our products and services, and ensuring that they meet our customers’ requirements.
“We are delighted to have received recognition that we are working along the right track. Our customer surveys have shown that 89 percent of those questioned evaluate our customer service as good or very good.”
Wolfgang Hintz, auditor at the VDE Institute, added: “Renusol has met all of the requirements of the ISO 9001 standard to an excellent level. It is rare to see a company this well prepared for a new certification with employees this motivated to implement the guidelines of the standard in all business areas.”