Vacuum tubes amplifier

PCB are perfect manufactured, I have a small comment, the hole in the bottom-right corner of PCBs goes through the top printed text (in design it was correct). The photo is attached. Do you have any idea what could have caused it? Thank you. Tomas



Jun 23,2026
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PCB
HDI PCB
Assembly
FPC/
Rigid-Flex
X
Choose Num (pcs)
2 Layers
1.6mm
CNC
Machining
Sheet Metal
3D Printing
Injection
Molding
Aluminum
Aluminum
Resin
ABS
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