Ecolabel is considered the strictest environmental label. It is a label applied for on a voluntary basis and given to products and services by an impartial institution. The eco-label proves to the consumer that this product is more environmentally friendly than other products belonging to the same product group. In addition, the eco-label informs the consumer that the producer cares about the environment, and this in turn increases the company's image.

The European Union eco-label belongs to the so-called first type of environmental labels and its purpose is:
* to promote such products, using which it is possible to reduce the negative impact on the environment, compared to other products of the same product group;
* contribute to the efficient use of resources and a high level of environmental protection;
* to provide the consumer with correct, reliable and scientifically based information about labeled products.
The granting of the EU eco-label is regulated by Regulation No. 66/2010 of the European Parliament and of the Council.

In Estko's product range, 11 products have been awarded the European Union eco-label