... .2nd, main use and applicable scope Uses in the coal mine mine shaft worker portable illumination.3rd, use environmental ... number5th, the product carries out the standard: GB7957-2003 "Miner's lamp Security Performance General Request", Q/ZTYT01 - 2,006 ... product explosion-proof pattern: ExsI First, product structure characteristicThe miner's lamp for carrying, by the lamp holder, the electric cable ...