亚洲国产成人AV网_最新黄片免费观看视频_亚洲色婷婷5月_中国老少交欧美另类

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.