the sub-brand rubber is a product that does not meet the requirements of relevant standards, and strictly speaking, it is not allowed to go out. Most of this kind of rubber is defective products produced by large rubber production enterprises, which are sold at a lower price under the name of deputy brand.

raw rubber is the main material of rubber products, which has a great influence on product performance, and the quality of sub-brand rubber is very unstable. It is recommended that regular enterprises do not use it.