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The bus system is also called RS485, and the branch system is also called 4-20mA model. The gas detector currently mainly uses these two wiring methods, each with its corresponding alarm host.

On April 29, a batch of suspended single hydraulic prop equipment was loaded in the fourth workshop of China Coal Group's intelligent equipment production and manufacturing, and then will be sent to a

On April 16, a batch of suspended mining single hydraulic prop equipment was loaded in the intelligent equipment manufacturing workshop of China Coal Group, and will be sent to a mine in Datong City,

On the morning of April 13, the 4th Executive Committee Meeting of the 13th Jining City Federation of Industry and Commerce is held in the Jining Yunhe Hotel Conference Center. Li Kexue, Vice Chairman

The bus system is also called RS485, and the branch system is also called 4-20mA model. The gas detector currently mainly uses these two wiring methods, each with its corresponding alarm host.

On February 19, 2021, the eighth day of the first month of the lunar calendar, all the people of China Coal gathered together for a grand opening ceremony of 2021. China Coal Group Chairman Qu Qing, G