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165 beads 13 children abacus mental calculation students use abacus 5 abacus in class
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Abacus name: 165#13-section plastic abacus with a clear-all device, orange beads, with units of ten, hundred, thousand, and million.
Abacus independently OPP bag packaging
Packing quantity: one box containing 100 pieces
Abacus single weight: 0.2kg per abacus
Abacus Specification: 25*7.5*2cm
