Where does this merchandise come from?
'Merce' — 'MER-che'. Two syllables. Soft 'c' before 'e'. Stress on first syllable.
At markets where goods might be imported, second-hand or of uncertain origin. Important for antiques, textiles and food products.
'Merce' = merchandise/goods. 'Da dove viene' = where does it come from. 'Viene' from 'venire' = to come. A full, formal-sounding question that signals you're a serious, knowledgeable buyer.
È importata dall'estero?
Is it imported from abroad?
Asking if it's foreign goods
Da che regione proviene?
From which region does it come?
More specific — asking for the Italian region of origin
Chi ha fabbricato questo?
Who manufactured this?
Asking for the manufacturer — useful for artisan goods
Lake Como (Lago di Como) produces about 75% of Europe's silk fabric and supplies Gucci, Hermès, Prada and Versace. Local market vendors selling Como silk fabrics are selling something genuinely world-class — at prices far below boutique retail.