Porcelain single operation. In this process, "green" (unfired) ceramic wares are heated to high temperatures in a kiln to permanently set their shapes. Porcelain is fired at a higher temperature than earthenware so that the body can vitrify and become non-porous. Porcelain originated in China, and it took a long time to reach the modern material. Until recent times, almost all East Asian porcelain was of the hard-paste type. There is no precise date to separate the production of proto-porcelain from that of porcelain. Although proto-porcelain wares exist dating from the Shang dynasty (1600–1046 BC), by the time of the Eastern
Coalport porcelain a maroon glaze and brought the Nantgarw technical recipes to Rose at Coalport. Coalport and Coalbrookdale specialised in dinner services. The familiar "Indian tree" pattern, which is based in fact on Chinese rather than Indian prototypes, was originated at Coalport; variants have been produced by virtually all the British manufacturers of table wares and continue to be available today. Models that originated at Meissen and Sèvres were copied at Coalbrookdale in the mid-19th century, sometimes with misleading marks, "a practice which ought to have been avoided", William Chaffers observed. Sprigged floral encrusted decoration was also typical of Coalport wares, such