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- 4 Layer PCB
- Product introduction: Description The 4 Layer PCB is a type of printed circuit board that is made up of four robust layers of glass fiber with four layers of wiring, including the top layer, bottom layer, VCC and GND. This intricate design offers exceptio
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Qingdao Huimeiyuan False Eyelashes Handicraft Factory
[Verified]
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Negotiable
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