Lithium electric safety lamp

18px Arial, Helvetica, sans-serif; WORD-WRAP: break-word; WHITE-SPACE: normal; ORPHANS: 2; COLOR: rgb(51,51,51); WORD-SPACING: 0px; PADDING-TOP: 0px; -webkit-text-size-adjust: none; -webkit-text-stroke-width: 0px\\">Pneumatic rock drill is a kind of high efficient drilling machinery. It is widely used in rock drivage and various

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18px Arial, Helvetica, sans-serif; WORD-WRAP: break-word; WHITE-SPACE: normal; ORPHANS: 2; COLOR: rgb(51,51,51); WORD-SPACING: 0px; PADDING-TOP: 0px; -webkit-text-size-adjust: none; -webkit-text-stroke-width: 0px\\">to operate, low failure rate and long life of parts, as well as good economic benefit