CATIA is an integrated CAD/CAE/CAM software of French dassault systemes company, which occupies a leading position in the field of CAD/CAE/CAM in the world. CATIA is widely used in aerospace, automobile manufacturing, shipbuilding, machinery manufacturing, electronics, electrical appliances and consumer goods industries. Its integrated solution covers all product design and manufacturing fields, and its unique DMU electronic prototype module function and hybrid modeling technology promote the competitiveness and productivity of enterprises. CATIA provides convenient solutions to meet the needs of large, medium and small enterprises in all industrial fields. Including: from large Boeing 747 aircraft, rocket engines to cosmetic packaging boxes, covering almost all manufacturing products. More than 13000 users in the world have chosen CATIA. CATIA originated from aerospace industry, but its powerful function has been recognized by various industries, and it has become a de facto standard in European automobile industry. CATIA's famous users include Boeing, Chrysler, BMW, Mercedes-Benz and many other well-known enterprises. Its user groups play an important role in the world manufacturing industry. Boeing Aircraft Company completed the electronic assembly of the whole Boeing 777 with CATIA, which created an industry miracle, and thus confirmed CATIA's leading position in CAD/CAE/CAM industry.