The product is represented by model, specification, and standard number. For example: (1) Shielded rubber sheathed flexible cable for coal mining machine, rated voltage of 0.66/1.14KV, power wire core of 3 * 50, ground wire core of 1 * 10, control wire core of 4 * 4, with a semi conductive shielding layer, represented as MCP0.66/1.14 3 * 50+1 * 10+4 * 4 MT818.2-1999; (2) Shielded monitoring braided reinforced rubber sheathed flexible cable for coal mining machine, rated voltage of 0.66/1.14KV, power wire core of 3 * 50, ground wire core of 1 * 25, control wire core of 2 * 2.5, with a semi conductive shielding layer, monitoring wire core and braided reinforcement layer, represented as MCPJB-0.66/1.14 3 * 50+1 * 25+2 * 2.5 MT818.3-1999; (3) Coal mining machine Metal shielded monitoring type rubber sheathed flexible cable, rated voltage 0.66/1.14KV, power core 3 * 70, ground core 1 * 25, monitoring core 1 * 35, with metal shielding layer, represented as MCPTJ-0.66/1.14 3 * 70+1 * 35+1 * 35 MT 818.4-1999 (4) Mobile elastic flexible cable for coal mines, rated voltage 0.38/0.66KV, Power wire core 3 * 25, ground wire core 1 * 16, without shielding layer, represented as MYE-0.38/0.66 3 * 25+1 * 16 MT818.5-1999 (5) Mobile metal shielded monitoring rubber sheathed flexible cable for coal mines, rated voltage 3.6/6KV, power wire core 3 * 35, ground wire core 3 * 16/3, monitoring wire core 3 * 2.5, with semiconducting shielding layer, represented as MYPTJ-3.6/6KV 3 * 35+3 * 16/3+2.5 MT818.6-1999 (6) Mobile shielded rubber sheathed flexible cable for coal mines, rated voltage 3.6/6KV, power wire core 3 * 25, ground wire core 1 * 16, used in low-temperature environments, with semiconducting shielding layer, represented as MYDPJ-3.6/6KV 3.6/6kv 3 * 25+1 * 16 MT818.7-1999 (7) Shielded elastic cable for coal mine electric drill, rated voltage 0.3/0.5KV, power core 3 * 4, ground core 1 * 4, represented as MZPE-0.3/0.5kv3 * 4+1 * 4 MT818.8-1999 (8) Mobile lightweight rubber sheathed flexible cable for coal mine, rated voltage 0.3/0.5KV, Insulated wire core 3 * 2.5, without shielding layer, represented as MYQ-0.3/0.5kv3 * 2.5 MT818.9-1999 (9) Coal mine miner's cap lamp wire, insulated wire core 2 * 0.75, represented as MM 2 * 0.75 MT818.10-1999. The meaning of mining cable models above MT818 is specified in the national standard GB12972, and the series code is U, which is the second letter of the mining character in pinyin. Because the letter K has been occupied by the control cable, the rest of the codes are basically the same.