the basic problem with the existing energy label is that it has no period of validity resulting the witch described that we have products on the same indifferent of energy
The basic problem with the existing energy label is that it has no period of validity, resulting in the situation which you described, namely that we have energy products on the market with the same label and different levels of energy efficiency.
The basic problem with the existing energy label is that it has no period of validity, resulting the which described, that we have products on the same and different of energy