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have been retrofitting

  • present perfect progressive
    of retrofit.
    retrofit
    verb (used with object)
    to modify equipment (in airplanes, automobiles, a factory, etc.) that is already in service using parts developed or made available after the time of original manufacture.

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Korean companies like LG Energy Solution have been retrofitting factories to catch up to demand for LFP cells.

From The Wall Street Journal Mar. 17, 2026