TB/T 3237 Flame retardant technical specification of decorating materials for multiple unit train. Test Method: GB 2406 Oxygen index test UIC 564 Combustion test GB 8323 Smoke density test TB 3237 Part 4.4 Smoke toxicity test Reference Standard: GB/T 2406.2 Plastics - Determination of Burning Behavior by Oxygen Index GB/T 10707 Rubber - Determination of the Burning GB/T 8323.2 Determination of Optical Density by a Single-chamber Test UIC 564-2 Regulations relating to fire protection
