Transition metal atoms can be surrounded by other ligands as the core of the metal ligand complex. A transition metal complex of a type of transition metal can be generated with different molecules or groups, such as RHCl · p (C6H5) 3, Ni (CO) 4, SNCl2 · H2PTCl6, HCO (CO) 4, etc., can be used as average The catalyst of the phase catalyzed hydrogenation reaction, hydrocarbycythylcarbonization reaction, hydrogen-based reaction,, such as the Quele-Natta type catalyst, is a direct-oriented special effect catalyst. The transition metal catalyst has an ability to borrow or take out or take electron from other molecules to make it excellent catalyst. An attractive feature that catalyzes is not consumed during chemical conversion. Metal catalysis can be further subdivided into heterogeneous metal catalytic or uniform metal catalysis. In the field of transition metallic chemistry, several transformations are generally existent in chemistry of synthesis and increasingly non-synthetic chemistry. These methods are named after their development and include, but are not limited to: Stille, Buchwald-Hartwig, Negishi, Heck, Miyaura-Suzuki and Sonogashira. Aladdin provides a wide variety of catalysts and metals, which are increasingly important to synthetic organizationalists. Aladdin's extensive transition metal catalyst product line covers all kinds of important reactions.