Styrene-Butadiene Rubber (SBR for short) is a synthetic rubber formed by the copolymerization of styrene and butadiene. It is one of the most widely used synthetic rubbers globally, accounting for over 50% of the total synthetic rubber production. Its properties lie between those of natural rubber (NR) and butadiene rubber (BR), and it is renowned for its excellent wear resistance, low cost, and high stability.

The 11th typhoon of this year, "Yang Liu" (tropical storm), was formed in the western Pacific Ocean this morning (on the 8th). 

Natural rubber is a natural polymer extracted from the latex of the Hevea brasiliensis tree. It is made into an elastic solid through processes such as coagulation and drying.