Replacement electron guns, detector assemblies, sample stages, diffractometer goniometers, and software-integrated control modules for electron and probe microscopes are captured here, supporting the substantial aftermarket for high-value scientific instruments. Given the long service lives and high repair costs of electron microscopes and diffraction systems, the parts trade is commercially significant for university research facilities, national laboratories, and semiconductor fabs. Importers of these components should be prepared to document the specific parent instrument model and OEM part designation to support classification as dedicated parts rather than general electronic components.

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