Zinc borate, is a fire retardant material.
It has many advantages: Non-poisonous, low water soluble,
Less specific weight, and used as an effective fire retardant in many fields.
Useage and amount: In PVC 3%-4%
In rubber 5%-8%
In plastic 10%-25%
In fibrous textile 5%-10%
In water proof material 5%-8%
In fibrous textile 5%-15%
And in many otherfields