Polls have shown as many as 90 per cent of adults know that the Swan is Norway &apos; s official eco-label, and about equally as many express that they prefer Swan-labelled products to those without the label.
Polls have shown as many as 90 per cent of adults know that the Swan is Norway &apos; s official eco-label, and about equally as many express that they prefer Swan-labelled products to those without the label.