Flame retardant paper 1, Width: 500-1900mm 2,Area density:20-600gsm 3,Flame retardant Fire-proof paperDescription:Our company is one of a few ... parameters:1, Oxygen index ≥ 44.2(GB/T2406)2, Smoke density rating ≤ 6( GB/T2406)3, Duration of flame (s) ≤ 1 (GB/T2406 ... , In addition, we could manufacture using the materials customer offers.Flame-retardant testing: Light the paper, and there is no ...