Are tanners in sofa factories harmful to health?

Yes Leather products, especially leather sofas, give people a noble and gorgeous feeling and highlight the atmosphere, but its inherent formaldehyde hazard is actually very serious. It is understood that general leather processing needs tanning, dyeing, gunning and fixing agent, which will inevitably lead to pollution such as formaldehyde, which will not volatilize after being "wrapped" and may not be exhausted in three to five years.