The impact caused by the free formaldehyde produced during the tanning process has been mentioned by tanneries and clients more than a decade ago. However only in recent years has the issue been taken seriously by tanners.

For both large and smaller tanneries, focus has been shifting to the testing of free formaldehyde content. Some tanneries would test every batch of their newly produced leather to ensure that their products are up to the standards.

For most people in the leather industry, the cognition of how to lower the content of free formaldehyde in the leather has been made quite clear——