In 1989, the voters of Texas approved a means by which certain tangible personal property transported out of the State of Texas within 175 days could qualify for an ad valorem tax exemption. In order to qualify, these personal property items must be detained in Texas for assembling, storing, manufacturing, fabrication, or for processing purposes. Most importantly, the inventory items must leave the state of Texas within 175 days from the date that they were acquired, assembled or brought into Texas. The law provides that counties, cities, towns, school districts and junior college districts may opt to continue to tax these items. Smith County's taxing jurisdictions offer this exemption.