777国产偷窥盗摄精品品在线,韩国精品一区二区三区无码视频,亚洲成人有码原创区,欧美亚洲日韩一区二区黄色网站

Molecular formula：xSiO2.yH2O Enforcement standard: HG/T2765.1-2005 Molecular weight：60.08

Size: 0.5-1.5mm、0.5-1mm、2-4mm、2-5mm、4-8mm

Characteristics：transparent or translucent glass-like pellet or lump，non-toxic and tasteless.

Packing：25kg per bag or 500kg per bag, net.

Note：The moisture content, packing and size may be customized per your specific requirements.

Use：Mainly used for drying and moisture proof , may also be used as catalyst carriers, adsorbents, separators and variable-pressure adsorbents, etc.