Meissen porcelain further precaution, very few workers knew the special secret ("arcanum") of how to make porcelain, and then perhaps only part of the process. Thus, for a few years, Meissen retained its monopoly on the production of hard-paste porcelain in Europe. By 1717, however, a competing production was set up at Vienna, as Samuel Stöltzel sold the secret recipe, which involved the use of kaolin, also known as china clay. By 1760 about thirty porcelain manufacturers were operating in Europe, most of them, however, producing frit based soft-paste porcelain. In order to identify the original Meissen products, Meissen developed markings that
Chinese export porcelain VOC, this became possible, and eventually even specific armorial designs could be ordered from Europe. Wares from the 16th century include Kraak porcelain, Yixing stonewares, Blanc de Chine, blue and white porcelain, famille verte, noire, jaune and rose, Chinese Imari, armorial wares, and Canton porcelain. Chinese export porcelain was generally decorative, but without the symbolic significance of wares produced for the Chinese home market. Except for the rare Huashi soft paste wares, traditionally Chinese porcelain was made using kaolin and petuntse. While rim chips and hairline cracks are common, pieces tend not to stain. Chinese wares were usually thinner than