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 Co. in 1814 The same year John Rose moved the Caughley production the short distance to the Coalport site. Rose's rapid success enabled him to buy the Nantgarw porcelain manufactory in 1819 and the Swansea porcelain manufactory, with their repertory of moulds. John Rose died in 1841; the enterprise was continued under the former name "John Rose & Co." by his nephew W.F. Rose and William Pugh. William Pugh continued the production as sole proprietor from 1862 until his death in 1875, after which the company was put in receivership by his heirs. It was purchased in 1880 by the