Before 2000, 80% of the country is its share of possession, especially on the international market. Carbon molecular sieve technology through the introduction of domestic Changxing chemical, carbon molecular sieve domestic manufacturers are mainly distributed in Changxing, Shandong, Xuancheng, and other places. Since 2000, the city declared Sun to new materials and other companies on behalf of some of the major manufacturers through continuous improvement and innovation Guangde zeolite, carbon molecular sieve domestic performance has been considerable development, in addition to the price advantage of domestic products due to Shanghai sieve, sieve-made gradual occupy most of the market share, due to the effective pore size molecular sieve 4A 0.4nm Shenyang 3a molecular sieve, so called 4A molecular sieve, its network structure composed of silicon-oxygen tetrahedron unit [SiO4] and aluminum-oxygen tetrahedron [AlO4] unit staggered from. Nature of the ion exchange performance ---- edit function to soften water features: 4A molecular sieve framework are each oxygen atom is shared by two adjacent tetrahedra, which form a large grain structure can be occupied by cations and water molecules points, and these cations and water molecules have a greater mobility, cation exchange and reversible dehydration. Guangde molecular sieve, there is a new molecular sieve (certified), there is a new zeolite molecular sieves by Shanghai Limited. Shanghai new molecular sieve Limited (www.molsionms.com) is Shanghai's Songjiang District, elemental leaders, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. There are new leaders in the molecular sieve with the staff warmly welcome all inquiries negotiations to create new molecular sieve a better future.