Siwawa not only has the function of shelter from the wind and rain, but also has the function of decoration. It can be used for roof decoration of villas, small foreign buildings, pavilions and other buildings, with classical and elegant decorative effect and unique charm. The physical properties of Siva must conform to the national standard JC709- 1998. Compared with ceramic tiles, the manufacturing process of siva is simpler, which is mainly divided into raw material treatment, blank extrusion, tile pressing, drying, glazing and firing. In the past, the production of xiwa was mainly fired in tunnel kiln. At present, siva sintering technology in roller kiln has matured. Guangdong Modena Technology Co., Ltd. successfully tested the production of siva in three-layer roller kiln and firing kiln, and besides flat tile, heavier S tile can also be fired on it. There are mainly three kinds of domestic Xiwa products, one is sintered clay tile, the other is cement colored tile, and the third is sintered colored tile (glazed tile and matt tile). Among them, sintered colored tiles have many functions and characteristics, such as good thermal insulation, durability, low cost, bright colors and so on, and gradually become the mainstream products of high-grade roof decoration. At present, there is basically no Xiwa production line in Guangdong, and the manufacturers are basically concentrated in Fujian and Jiangxi, among which Yifeng County, Gao 'an, Jiangxi has set up factories together. In the past two years, eight Xiwa production lines have been put into production. In addition to being widely used in rural markets, the demand for Siva in Jiangsu, Zhejiang, Guangdong and other regions is gradually heating up.