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our 20 layers product |
this photo is our 20 layers board:
Board thickness:5.08+/-0.5mm
The structure of burried and blind via:L1/L2,L2/L3,L4/L5 have laser blind via. burried via locate at L3/L14.
Impedence controll:
Surface finshed: immersion gold
step hole:6.8mm/3.5mm,6.8mm/3.55mm
laye account: 20 layers
we cooperate with internatinoal famous raw material supplier, like shengyi,Taiyu,Rohm and Haas. we are praud to say our product quality is brilliant.
if you are looking for the good supplier, please do not hesitate to contact us.
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