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Attached. The metal sheet was mounted in a black hosting.

It was very thin just like a pc of metal sheet. I guess thickness was similar to 2~3 layer of aluminium fold. I have took the photo but I don't konw how to post it.

I have disassembly a laser of 405nm which I find there are 4 pcs of different lens in between. One of those was like a mirror in golden colourwhich reduce cercent amount of laser intensity. Normal daylight or torch light cannot pass through it. only the blue laser can pass through. Can anyone...