Ribbed Smoked Sheets (RSS) are a widely recognized form of natural rubber, crafted from coagulated latex sheets. Classified into grades RSS1 through RSS5, these sheets are evaluated based on their elasticity, color, and purity, following the standards outlined in the International Rubber Quality and Packing Conference (IRQPC) Green Book. The classification of each grade is determined through careful visual inspection by seasoned sorters and inspectors, ensuring adherence to stringent quality measures. The different grades of Ribbed Smoked Sheets—RSS 1, RSS 2, RSS 3, RSS 4, and RSS 5—offer varying levels of performance, tailored to meet specific industrial requirements.