Name： FR-4 mobile phone board Product number：4 material： slab thickness ：0.40mm Minimum line / space： minimum-value aperture ：0.20mm surface treatment：Immersion Gold
Name： FR-4 mobile phone board
Product number：4
material：
slab thickness ：0.40mm
Minimum line / space：
minimum-value aperture ：0.20mm
surface treatment：Immersion Gold
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