Ceramic materials for tiles include earthenware, stoneware and porcelain. Major types include earthenware, stoneware and porcelain. Cornish china clay was used in the production of earthenware and stoneware. The pottery of coloured glazes decoration over unglazed earthenware molded in low relief. Other wind chimes materials include glass, bamboo, shell, stone, earthenware, stoneware, beads, keys and porcelain. Clay-based pottery can be divided into three main groups&colon; earthenware, stoneware and porcelain. It is a primary raw material for many ceramics such as earthenware, stoneware, and porcelain. Common examples are earthenware, porcelain, and brick. Other kilns produced earthenware and clay pipes. The women worked on moulding earthenware crockery. They dug small pits that contained flint-tempered earthenware pots. In East Africa deep fried food is common, cooked in cast iron or earthenware pots. During summer people put cane juice in earthenware pots with iron nails. Bronze-decorated coffins and burial sites filled with earthenware remains have been excavated. They also produced other kinds of bone china, earthenware, parian, etc.