The tomato obtained from the San Marzano 2 and KIROS varieties or from improved lines, to make use of the Protected Designation of Origin (DOP) 'San Marzano tomato from the Agro Sarnese-Nocerino" must be produced by farms and transformed by industrial companies, both falling within the in the territorial areas delimited as follows:

Province of Salerno

The entire territory of the municipalities of San Marzano sul Sarno, Scafati, San Valentino Torio, Baronissi, Fisciano, Mercato San Severino, Siano, Castel San Giorgio, Roccapiemonte, Nocera Superiore, Nocera Inferiore, Sarno, Pagani, Sant'Egidio del Monte Albino, Angri.

Province of Avellino

The entire territory of the municipality of Montoro.

Province of Napoli

The entire territory of the municipalities of Boscoreale, Poggiomarino, Pompei, Sant’Antonio Abate, Santa Maria La Carità, Striano, Gragnano, Castellammare di Stabia, Acerra, Afragola, Brusciano, Caivano, Casalnuovo, Camposano, Castello di Cisterna, Cicciano, Cimitile, Mariglianella, Marigliano, Nola, Palma Campania, Pomigliano D’arco, Scisciano, San Vitaliano.