scientific experiment stem teaching aids suspension electromagnetic force small train elementary school students scientific and educational toy copper pancake coil track model
科学实验STEM教具悬浮电磁力小火车小学生科教玩具铜线圈轨道模型
EXW Price:Min. order:
¥22.75
≥1/box
¥21.45
≥100/box
¥17.94
≥1000/box
1 box
Exchage Rate 1 CNY ≈ 0.1432 USD
Weight0.5 kg/box
Stock num
978570 box
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