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Sock maker near Braga, Portugal, producing about 3.5 million pairs a year in organic cotton and merino for department stores, chains and brands such as Asket.

Historic Maine woolen mill making mule-spun wool knitting yarns from mostly East Coast fleece.

Knitwear house born in Scotland in 1770 and now based in Italy, making sweaters and coats in cashmere, extrafine merino, lambswool and combed cotton.

Arequipa knitwear and apparel maker producing alpaca and organic cotton sweaters, coats and accessories for brands and designers; also runs its own label, Anntarah.