At present, The main processing methods of blind holes are laser drilling and exposure hole to be more commonly used two types of holes,
Of course there are so many other ways, but probably easier to be accepted the two methods we usual discussed.
A bit difficult to say which one is more convenient, mainly to see the producers own manufacturing process capabilities and habits.
Moreover,laser drilling holes in the copper, there are fiberglass materials need to drill laser holes and so on.
How to choose, of course we have to look at customers requirements and producers process capability,
But now the majority of PCB manufacturers are still using laser processing.
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