... product with light source of high-power LED is supplied power by Lithii battery;its ... ,illumination time long,illuminance strong,life long,anti-corrosion,maintance free,use- cost low ; ... fixed in the mining safe cap.3, KL4LM is suitable to the environment temperature -15~ ... Lamp: GB9757-20032, KL Type Mining Lamp: MT927-20043,KL2LM Type Mining Lamp:Q/DG.017-2007Certificates1,Production Approval2, Explosion ...