GB 12666.7 Fire Test -Standard Code：
GB 12666.7 Test method on electric wires or cables under fire conditions-Part 7: Measurement on smoke density of wires or cables
GB 12666.7 Fire Test - Reference standards：
GB/T 17651.2 Measurement of smoke density of cables burning under defined conditions-- Part 2:Test procedure and requirements
GB 12666.5 Test method on electric wires or cables under fire conditions-Part 5: Test on bunched wires or cables.
GB/T 17651.2 Measurement of smoke density of cables burning under defined conditions Part 2: Test procedure and requirements
TB/T1484.1 Specification for cables on board rolling stock-part 1: standard wall insulation cables up to AC 3kv