Quick Details Place of Origin:Hebei China (Mainland)Model Number:BYColor:silver white gold red etc.Specification:0.5-1mm,1-3mm,2-4mm,3-6mm,4-8mmFeature:water preservation,better ventilationUsage:agriculture,horticulture,fostreyHardness:1~1.5PH:7~8Shape:lumpcompression strength:100-150MpaPackaging & Delivery Packaging Detail:1 ton bag or as..