Standard Thai Rubber 20 (STR20)

CPA’s rubber block uses clean cup lump rubber as raw material sourced from the company’s farmer promotion projects. The plant uses standardized processes with a focus on ensuring consistent quality. It serves as a high-quality raw material for the automotive tire industry and other industries that use rubber components. There are three main types: STR10, STR20, and STR Mixtures. These grades are based on Thai Rubber Standard (STR) which considers factors such as dirt content, ash content, volatile matter content, color, hardness index, and elasticity index.