Why is the glue of finished PVC dipped gloves so hard?

The glue of the finished PVC dipped gloves is very hard because the amount of oil used is less or the oil used is of poor quality.

Dip gloves, also known as latex gloves, are a type of gloves. It is different from ordinary gloves and is made of latex. It can be used in household, industrial, medical, beauty and other industries and is an essential hand protection product. Dip gloves are made of natural latex and other fine additives. The products have undergone special surface treatment and are comfortable to wear. They are widely used in industrial and agricultural production, medical treatment, and daily life.