The AYC-2000BILpro high-sensitivity back illuminated spectrometer developed and produced by Aoyu Chen Guang AYC Optics achieves optical resolution accuracy that can only be achieved with larger sizes in the industry in a space of 145mm * 110mm * 40mm. Moreover, the signal-to-noise ratio is about twice as high as the industry, reaching up to 600:1, making this product more widely used in Raman testing and plasma spectroscopy detection.