Polypropylene Plastic Ball yog cov cua kub tsis kam, tshuaj tiv thaiv corrosion ntawm cov yas, suav nrog polyethylene (PE), polypropylene (PP), reinforced polypropylene (RPP), polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), thiab (PVDF) xws li ntau packing cov ntaub ntawv.