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QINGHUA ELECTRONIC INSTRUMENT CO.,LTD.

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Mathematics

Mathematics

Object diagonal cube

Geometry board

Teacher and Pupil Clock

Geometrical feature in outspread(5pcs)

Multibase

Turnplate of color lump

Number balance

Oblique cone

Multibase

Centimetre of cubes

Calender stamp

Square set

Fold Rule(200cm)

Dice

plastic counter

Geometrical feature

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