China Yuchai Announces Achievement of Climate Requirements by its National IV Compliant Natural Gas Engine

China Yuchai International Limited CYD announced today that 80 buses manufactured by the Yutong Bus Group Co., Ltd. running on YC6G260N-40 natural gas engines supplied by Guangxi Yuchai Machinery Company Limited ("GYMCL"), the Company's main operating subsidiary, recently completed their journey from Xining, Qinghai province, to the Tibetan Plateau, meeting the climate requirements for operating at high altitudes. These natural gas engines showcase GYMCL's technical capabilities and product quality leadership in the region. The successful trial of the engine positions GYMCL as a key partner in the ongoing economic development of northwest China. The YC6G260N-40 engine is a 6-cylinder engine with torque of 980 N.m at 1,400 rpm, which can use either compressed natural gas (CNG) or liquid natural gas (LNG) to power it. It features full-authority electronic controls with robust programming options and advanced diagnostics to optimize engine performance and provides seamless integration with the other components in the engine. It produces ultra-low noise and incorporates a water-cooled exhaust gas turbocharger for higher efficiency and longer service life. The YC6G260N-40 engine is compliant up to National 4 emissions standard.