Weichai Power was established on December 23, 2002, which Weichai Factory injected its operating assets and liabilities relating to the manufacture and sale of WD615 and WD618 Engines and cash, and together with other Promoters who contributed cash, established the Company. The history of development of the Company is as follow:

Weichai Factory was established in 1953, and was one of the first diesel engine manufacturers in the PRC.

From 1950's to early 1980's, Weichai Factory developed and manufactured various medium speed diesel engines with an output of 51kW-99kW.

In 1984, State Development and Planning Commission and State Economic Planning Commission specified Weichai Factory as one of the designated manufacturers for the development and manufacture of Steyr WD615 diesel engines. In the same year, the State Economic Planning Commission issued the Consent in Relation to the Change of Administration of Weichai Factory, which specified Weichai Factory as one of the designated manufacturers of diesel engines for heavy-duty vehicles.

In October 1989, the Weichai Production Line was tested and accepted by the relevant governmental bodies. Production of WD615 engines for use in heavy-duty vehicles also commenced in the same year.

In 1990, 1992 and 1994, Weichai Factory successfully developed and launched various variants of WD615 Engines for use in power generators, construction machines and vessels, respectively.
In 1995, Weichai Factory received ISO9001 accreditation. In the same year, Weichai Factory entered into contract to import the WD618 technology from Steyr.

In October 1999, Weichai Factory acquired Chongqing Weichai and thereby increased its production capacity of WD615 Engines.

In May 2000, WD618 Engines for use in heavy-duty vehicles were launched in the market.

In 2001, Weichai Factory successfully developed and launched its WD615 and WD618 Euro I engines.

In 2002, Weichai Factory further upgraded its WD615 series to Euro II Standards.

On 23 December, 2002, Weichai Factory injected its operating assets and liabilities relating to the manufacture and sale of WD615 and WD618 Engines and cash, and together with other Promoters who contributed cash, established the Company.

In March 2003, the Company's WD618 Engines successfully achieved Euro II compliance. In August 2003, the Company was approved by the Department of Science and Technology of Shandong Province as a new high-technology enterprise.

On Mar.1st,2004, Weichai Power passed the British ISO/TS16949 quality administration system authentication. Weichai is the first company in China internal-combustion diesel engine industry to pass the ISO/TS16949.

On Mar.11, 2004, Weichai Power (SEHK stock code.2338) debuted strongly on the Main Board of the Stock Exchange of Hong Kong Limited.

In March, 2005, Weichai Power produced its first EURO III compliant large power diesel engine, the Landking.