Ability development: interest development
<br />Colors: blue, yellow，pink，orange，purpose
<br />Size: 30g,50g
<br />quality：1pc
<br />Applicable age: 7 to 14 years of age for juveniles)
<br />Packing method: net bag
<br />Characteristics: Water-insoluble sand, the blue sand. Which is adsorbed by oily substances because its surface will not be. Adsorbed by water. Was originally used to remove oil leaked in seawater. Unfortunately. Due to the high cost, it is hard to be large The scale of use. Has gradually become the people's toys.
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