Reply #112: The Buyer/Purchaser

[One_Life_To_Give]

For building products there is additional follow-up by the Authority Having Jurisdiction (i.e. Local Building Code Inspector).
Otherwise the deal is between the
A) Manufacturer (Possibly went out of business/changed ownership since. Seems to happen frequently with places manufacturing substandard/non-compliant/counterfeit products)
B) Purchaser
c) Middlemen if applicable (great variability in how differing firms deal with trying to ensure product quality/avoid risks of Gray Market etc)