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In the United States, the quality of gold-filled composite is defined by the Federal Trade Commission (FTC). If the gold layer is 10kt fineness, the minimum weight of the plated layer on an item stamped gold-filled marks according to the Federal Trade Commission (FTC) must equal at least 1 ⁄ 20th of the total weight of the item.
The company began in 1918 as SW&Y Supply, a wholesale grocery-distributing business. In 1953, Douglas D. Brendle, the grandson of the company's founder, joined the business. He began stocking toys and houseware items, turning its Elkin warehouse into its first wholesale showroom. In 1957, Brendle began publishing the company's first catalog. [4]
Islamic Golden Age brass astrolabe Brass lectern with an eagle. Attributed to Aert van Tricht, Limburg (Netherlands), c. 1500.. Brass is an alloy of copper and zinc, in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic and chemical properties, [1] but copper typically has the larger proportion, generally 66% copper and 34% zinc.
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