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06-13
2022
views：48
Pcb plate commonly used raw materials are mainly: substrate, copper foil, PP, photosensitive material, anti-welding paint and substrate, etc.
2022-06-13 48views
06-13
2022
views：49
1、FR-4 A flame resistant material grade code, represents the resin material must be able to burn a material specification, it is not a material name
2022-06-13 49views
06-13
2022
views：34
The requirement of upper pad for PCB drilling is: certain surface hardness to prevent the surface burr of drilling. But it can't be too hard and wear off the bit.
2022-06-13 34views
06-13
2022
views：32
One, what is coated aluminum plate coated aluminum plate is on the surface of the aluminum plate covered with a layer of PVC, PET film, usually there are two kinds of single coated plate.
2022-06-13 32views
06-13
2022
views：28
PCB entry/backup boards were born almost at the same time as PCB in the 1940s and 1950s.At the beginning, the phenolic resin cover plate was used
2022-06-13 28views
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Name: Yiyang Jindong Technology Co., Ltd
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