Nowadays, due to the changes of global climate, the living conditions and the technology, the major automakers have introduced turbocharger engine cars which could effectively reduce exhaust emissions and increase fuel efficiency. The demands of turbochargers and their components have also increased simultaneously.

In the current after-service market (AM), high-quality components exist, but also filled with a lot of low-quality products which badly shortening the lifetime of rebuilt turbochargers, making inefficient fuel consumption and more exhaust emissions, with respect to consumers who spend time and money, but get back worse-repaired turbochargers, and also more damage to the environment of the Earth.