Definition of "Production":
"Activity involving the substantial transformation of a foreign article resulting in a new and different
article having a different name, character, and use, or activity involving a change in the condition of the article which
results in a change in the customs classification of the article or in its eligibility for entry for consumption (15 CFR 400.2(o))."
For most companies, this means that if the HTSUS number of any foreign status component changes, production authority is needed.