This legislation aims to bolster the domestic semiconductor industry by expanding and extending the advanced manufacturing investment credit . It redefines an "advanced manufacturing facility" to explicitly include those primarily engaged in manufacturing semiconductors, semiconductor manufacturing equipment, and crucially, semiconductor materials . The bill provides comprehensive definitions for these materials, distinguishing between direct production materials , which are physically incorporated into a finished semiconductor, and indirect production materials , which are specialized materials used in production but not physically integrated. Examples of indirect materials include process chemicals and photolithography materials, with exclusions for generic-use items. To ensure clarity, the Secretary of the Treasury will also publish an annual list of qualifying materials and allow for taxpayer petitions. Furthermore, the bill extends the advanced manufacturing investment credit period by five years, moving the expiration date from December 31, 2026, to December 31, 2031 , for property whose construction begins after the earlier date.