China Yuchai International Limited announced that its main operating subsidiary, Guangxi Yuchai Machinery Company Limited introduced 12 new engines to be launched in 2013, at a new product conference held on December 27, 2012 in Yulin, Guangxi Province. Seven of the models are National V-compliant natural gas engines and the other 5 models are National IV-compliant diesel engines. These engines are GYMCL's new key products for 2013 as China is expected to implement the National IV emission standards nationwide and introduce the National V gas engine emission regulations this year.