JACK&EMMA's story begins in early 1952, it is a national company with doing diesel injection parts, who was the founder and the great member of China diesel injection system. 

In 1976, along with the Chinese government's reform and opening up, it became a private company. In the years of development, it has been recognized by many customers from domestic and foreign countries.

So in 2012, our company decided to enter the international aftermarket under the name of KINGSTAR DIESEL. With our excellent product quality, KINGSTAR brand has quickly stepped into the international market and won the trust and praise from many customers around the world.

Then the important moment came in 2022, KINGSTAR DIESEL GROUP as the core shareholder  established JACK&EMMA factory, who is specializing in the research and development and production of Euro III-Euro VI emission-compliant solenoid valves and piezoelectric diesel common rail fuel injection systems. In recent years, JACK&EMMA has established own R&D center, with research bases in China & the United States, bringing together many high-tech R&D experts in the industry. 

We believe that JACK&EMMA's achievements have just begun and will create more brilliance in the field of diesel injection.