The main component of water-soluble wax is a polymer and does not contain urea. The material is environmentally friendly, non-corrosive to the skin of production workers and has no odor. Polymers generally refer to polymeric compounds, also called macromolecules. They generally refer to compounds with a relative molecular mass of several thousand to several million. The vast majority of polymer compounds are therefore mixtures of numerous homologs with different relative molecular masses. , the relative molecular mass of a polymer compound is the average relative molecular mass. Although the relative molecular mass of polymer compounds is large, their composition is not complicated. Their molecules are often composed of specific structural units linked repeatedly by covalent bonds.