... Customized Specification:Diameter 1-25mm SGS, ISO certification Nano silver Ceramic Ball Description : One kind of environmental protection and health ... , special formula and agglomeration techniques, and used with the ceramic ball for eliminating bacterium of water purifiers, textile fiber, ... 60% Zinc oxide: about 2.5%, Kaolin: 10~15% Far infrared powder: 10%, Clay with top grade: 20~30% Others: ...