Calamine brass slowly phased out as zinc smelting techniques were developed in Europe, which produced metallic zinc more suitable for brass production than calamine. However, the conversion away from calamine brass manufacture was slow; a British patent was awarded to William Champion in 1738, but the alloying of metallic zinc and copper to produce brass was not patented until 1781 (by James Emerson), and calamine brass mills persisted in South Wales until as late as 1858. The slow diffusion of this technology was probably the result of economic factors. Calamine brass Calamine brass is brass produced by a particular alloying technique using
Metallic fiber also produces metallic yarns; the city Dongyang contains more than 100 factories, though some of these are home based production sites rather than conventional factories. Two of the more popular factories are Salu Metallic Yarn and Aoqi Textile. The most popular company in Europe is the company Wagner-Tech-Textile GmbH with the brand name Rexess, this company is probably the last company which is able to produce metallic yarn in EU. They have still machinery for production of supported and unsupported metallic yarn. The Lurex Company has manufactured metallic fibers in Europe for over fifty years. They produce a wide variety