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Description
13 Column Abacus:The abacus is also a desktop decoration that means wealth and ..Arithmetic Counting Abacus:The abacus is an excellent calculation tool for enlightenment mathematics which can cultivate and improve children's computing power, memory and attention..Students Math Abacus:The appearance design of the product is simple and elegant..Rekenrek Abacus:It is made of high class material, which has the long service life..Math Leaning Tool:The product is exquisitely made and the color is not easy to peel off
