1000W 1200W LED Dej nyab lub teeb yog siv ntawm Coal Mining hauv Mongolia
JR309-1000W 1200W siab zog siab luminous efficiency 150lm / W coj dej nyab lub teeb tau dav siv ntawm thee mining hauv Mongolia los ntawm 2016 txog 2019. Muab cov ci ci txaus rau Coal mining hauv 24 teev 7 hnub.
