... China ( mainland)SGSAbout plastic ball Product namePlastic ballMaterial POM(Delrin),NYLON,ABS,AS,PP,PE,PVC,PS,PC, TEFLON.....Size ... for furniture, micro-pumps for sprays, dispensers, pumps and valves, precision instruments, measurement and control equipment, photographic and pharmaceutical equipment, com ... be used to temperatures of 140°F (60° C). precision PVC balls/plastic Balls