Supply DIY earthquake alarm device material for children's science experiments-

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DIY earthquake alarm device material for children's science experiments

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Updated: 2019-08-05 16:14
About Product:Earthquake alarm principle: when shaking small production, glass beads of copper wire will contact the o-shaped lamp, the line is connected, the buzzer issued a drop of sound

EXW Price:

400pcs ~3999pcs		CN ￥ 3.8 /pc
4000pcs ~39999pcs		CN ￥ 3.7 /pc
Above 40000pcs		CN ￥ 3.6 /pc

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Chengdongying Toys Firm 13yr.
Main Products:	toys
Contacts:	Chen dongyingChat
Mobile:	86-15057937178
E-mail:	770279509@qq.com
WeChat:	cdy15057937178
Address:	2279 B, 10 Street, 1 F, 14 Gate, International Trade Mart (District 1).

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