Flexible stone (soft porcelain) is the core product of Nai Sheng, which is an environmentally friendly building decoration material formed by hybridization of econic clay and environmental protection polymer. The academic name is "modified inorganic powder composite material," MCM (modified clay material) is its abbreviation. At the beginning of its birth, because it has the appearance effect of ceramic tiles and has soft characteristics, it is commonly known as flexible stone or soft porcelain. Later with the development of technology, it can be upgraded to imitate stone, imitation animal skin pattern, imitation wood grain, etc., all that can be imagined, flexible stone can be realized. Econic clay self-hardening molding time is long, but weather resistance is long, through hybridization, high molecular crosslinking makes econic clay derived from flexible stone products can achieve industrial production.