大肉棒操小穴里面好爽视频-亚洲精品成人午夜久久-一本一本久久久精品综合不卡-老女人国产香蕉久久精品

Molecular formula：xSiO2.yH2O

Characteristics：Bead or irregular shape with purple, orange or yellow.

Packing：25kg per bag or 500 g per bottle.

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

Use：Mainly for drying and indicating humidity of precision instruments, medicine, petrol chemicals, foodstuff, clothing, leather, electric appliances, other industrial gases, etc.