2017

Obtaining CNAS Laboratory Accreditation Certificate in January of 2017

2013

Starting bulk production of T95 high performance ceramic

2010

Production and sales of spark plugs exceeded 100 million

2006

Acquisition of Delphi U.S.A in 2006 and realized the modular development of the ignition

2005

Weichai became the new owner in 2005

2004

Successfully signed a long-term strategic shift production cooperation agreement with spark plug industry international..

2003

Annual output exceeded 50 million

1997

Delong entered and hosted in 1998. Established Spark Plug department.

1993

Renamed TORCH SPARK PLUG and listed in stockmarket in 1993, code 0549.

1961

Established in 1961 in Lukou Zhuzhou, and developed the first spark plug