Hengda Intelligent Control's annual revenue has increased by about 20% in the past three years, and its annual net profit has increased by more than 30%. In the first quarter of 2023, its revenue will be 610 million yuan, and its net profit will be 209 million yuan. Established on March 5, 2009, Hengda Intelligent Control is specialized in the field of intelligent coal mining system, focusing on the research, development, production and sales of technologies and products of intelligent coal mining control system. According to the prospectus, Hengda Intelligent Holdings realized operating revenue of 1.454 billion yuan, 1.85 billion yuan, 2.428 billion yuan and 610 million yuan respectively in 2020, 2021, 2022 and the period from January to March 2023, and the corresponding net profits were 419 million yuan, 524 million yuan, 734 million yuan and 209 million yuan respectively.