... 4. High quality About us Brand NamePlace of OriginStandardxinxinZhejiang China ( mainland)SGSAbout plastic ball Product namePlastic ballMaterial POM(Delrin),NYLON ... , alcohols and many inorganic substances, saline solutions, solvents, gasoline (petrol), water, oils, greases, detergent, fruit juices and milk. It ... to temperatures of 140°F (60° C). China Good Quality POM Plastic Ball ( SGS approved )