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Hi, I want buy my first laser(2000mw): Aliexpress.com : Buy oxlasers 100mw OX G101 star Green laser pointer PEN with visible beam +FREE SHIPPING from Reliable pen plastic suppliers on OXLasers's Online Official Flagship Store
I have a question: What is exactly 445nm/447nm/450nm?
I have a question: What is exactly 445nm/447nm/450nm?