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It can be used in all explosion-proof places in coal mines, such as the main and secondary roadways of the working face, the belt roadway of the disk area, the railroad roadway of the disk area, the main roadway of the main shaft, the electromechanical refuge, and the refuge room.Energy and Labor

The lowest growth rate in 5 years! January-February China's lighting products exports fell 22% year-on-yearAccording to customs data, January - February, China's lighting products exports totaled about 7.6 billion U.S. dollars, the lowest year-on-year growth rate in five years. Affected by the