Photo taken on April 21, 2021 shows engines presented by Weichai Power Co., Ltd. at the 2nd World Congress on Internal Combustion Engines in Jinan, east China's Shandong Province. The technology of producing high-end diesel engine used to be a bottleneck for China's equipment manufacturing industry. Weichai Power Co., Ltd., a state-owned enterprise founded in 1946, has developed China's first high-speed and high-power engine with completely independent intellectual property rights after more than ten years of scientific and technological research, completely ending China's long-term reliance on foreign technologies for heavy commercial vehicles. In 2018, Weichai won the first prize of the State Scientific and Technological Progress Award, and embarked on a path towards international market and high-quality development. (Xinhua/Guo Xulei)