1950, the company moved to Laiyang, and 1953 began to produce internal combustion engines (the first diesel engine was 1 140 12 horsepower diesel engine). Up to now, it has formed a production capacity of 700,000 single-cylinder and multi-cylinder vehicles.
1997 Shandong Huayuan Donglai Internal Combustion Engine Co., Ltd. was established as a joint venture with China Huayuan Group.
1June 1998 Huayuan Kyle co., ltd went public and became its subsidiary.
In April, 2008, Huayuan Kyle was acquired by China Hengtian Group and became a third-tier subsidiary of Hengtian Group.