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According to Zhongda Dentsu, the display system consists of 4*6*67, using LED light source, the color reproduction degree is more real and excellent, the service life reaches 60,000 hours, and it is said to be suitable for 7*24 hours of use environment. Support the safe production and dispatch of coal mines 365 days a year. 
Zhongda Dentsu said that in the process of system construction, its 5138 optical machine with LED light source solved the problem of system maintenance and the consumables cost in the later years.
Zhongda Dentsu particularly emphasized that this time, Zhongda Dentsu was able to successfully win the bid for the largest LED light source rear-projection unit in the northwest among many competitors, and laid a solid foundation for the development of the large-screen display products of the company in the coal energy industry. basis. 
Zhongda Dentsu LED light source large screen officially unveiled in Huangling Coal Mine
Recently, Zhongda Dentsu tailored the company's DLP large-screen display system for the Shaanxi Huangling Coal Mine Coal Preparation Plant, which is used for the safety command of staff operation and equipment operation.