The details of the underground signal cable: mining signal cable (now collectively referred to as coal flame retardant communication cables) mine for signal transmission signal cable for mine, removable or fixed use. Mining using standard signal cable products: MT818-1 999 MHYVR (PUYVR) (1 × 2 1 × 4 × 3 × 2 4 × 2 5 × 2 × 2 8 × 2 10 × 2) PVC insulated PVC signal cable, the sheath coal for the mine for ordinary signal transmission, removable use. MHY32 (PUYV39-1) (1 × 2 1 × 4 × 2 3 × 2 × 2 × 2 × 2 8 × 2 10 × 2) 1/1.0, 1/1.38 polyethylene insulated steel wire armored, PVC vinyl sheath coal mine for drift or shaft or inclined signal cable for signal transmission. MHYV (PUYV) (1 × 2 1 × 4 2 × 2 3 × 2 4 × 2 5 × 2 6 × 2 8 × 2 10 × 2) 1/1.0, 1/1.38 polyethylene insulated PVC sheathed coal use The signal cable is used to mine for normal signal transmission, for fixed laying. MHYVRP 7/0.30, 7/0.37, 7/0.43, 7/0.52 (1 ~ 10 pair of 1 × 4) insulated copper wire braid shield PVC sheathed coal signal cables for the electric field interference larger place for the signal transmission cable is softer. MHYVP (1 × 2 1 × 2 × 2 3 × 2 × 2 × 2 6 × 2 8 × 2 10 × 2) × 7/0.30, 7/0.37, 7/0.43, 7/0.52 polyethylene insulation poly PVC sheathed coal mine signal cables for the electric field to interfere with the larger spaces for signal transmission can be used for fixed installation Order: