| plastic sand timer, educational materials, |
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| Publish Date | 2009 / 06 / 22 |
| Expiry Date | 2010 / 04 / 22 |
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| plastic sand timer, educational materials, |
With green sand in side, we contribute a lot of sand timers , they are flat in both ends,
funnel like, the duration of times is up to amount of sand inside |
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