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This new, single fiberglass layer will then, at that point, be covered with a layer of copper on both the top and base sides. A compound called photoresist, a light-delicate material that shapes a copper-scratched follow on the PCB when presented to light, is then covered on top of the copper layer.Subsequent to covering the copper with photoresist, an example covering explicit pieces of the layer is then positioned mother board review on top of it prior to uncovering the whole section to UV light.