Marketing teaching is with supplementary teaching board

The utility model discloses a marketing teaching is with supplementary teaching board, the on -line screen storage device comprises a base, the top fixedly connected with support column of base, one side fixedly connected with fixed column on support column top, the first connecting block of one end...

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Bibliographische Detailangaben
1. Verfasser: JI ZHUQING
Format: Patent
Sprache:chi ; eng
Schlagworte:
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