When you search "[product] manufacturer," most of the first page isn't manufacturers. It's directories (Europages, Kompass), marketplaces (Alibaba, IndiaMART), machine builders, and news. Contacting them wastes your outreach.
Tell-tale signs of noise
Directory and marketplace domains, "buyers guide," "market report," "we list suppliers," and pages that aggregate other companies. Machine builders talk about "extrusion line," "thermoforming machine," "Maschinenbau" — they sell equipment, not the product.
What a real producer looks like
Its own site describes making the product, with product pages, capabilities and a contact/imprint page. That's the signal worth keeping.
Fiorentis filters out directories, marketplaces, machine builders and competitors automatically, and shows you why each company was kept or dropped.