ET Co.,Ltd., referred to as "ASYT", which is national high-tech enterprise, and shareholding with Chinese Academy of Sciences institutions. Main business scope is design, synthesis, production and sales of new material ligands. Currently, company is focusing on the design and production of Covalent Organic Frameworks and Metal-Organic Frameworks. We ensure the stability of each batch of product quality with strict quality inspection system, and provide gram-kilogram-100kg product demand, which could be comply with the requirements of different customers. At the same time, company provides CRO-CMO services. The company is located in H13 Building, Phase III of Beihu Science and Technology Park, Changchun, Jinlin. It is about 2,600 sqm with single building for research and development. Our company has become the most complete variety and goods in stock in China. We are improving the progress of research and help the development of new materials industry with reliable quality, sufficient spot goods and variety of varieties. There are thousands of COFS monomers as porous materials, including aldehyde series, amino series, carboxyl series, boric acid series, cyano series, nitrogen series, sulfur series and customized service. Our clients are mainly: Tsinghua University, Peking University, Fudan University, Tongji University, Nanjing University, Jilin University, Beihang University, Beijing Institute of Technology, Nankai University, Tianjing University, Zhejiang University, Wuhan University, China Academy of Sciences Huaxue Academe, and the scientific research institutions from United States, Switzerland, South Korea, Singapore, Hong Kong, Japan etc. The product has been applied by research groups of several universities and has published SCI papers bout high impact factors.