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The apparent thickness is 25-35mm, the standard width is 1.2m, and the length can be customized according to customer requirements. It is recommended to be ≤ 4.5m, and the non-standard width must be < 1.2m. The composition of the flexible sound absorbing and insulating screen (sound absorbing and insulating soft curtain) is: with special coating flame retardant protective cloth+environmentally friendly fiberglass sound-absorbing cotton+sound insulating material+environmentally friendly fiberglass sound-absorbing cotton+with special coating flame retardant protective cloth. The fiberglass cotton and protective cloth are combined together through cross stitching technology. The formaldehyde emission of fiberglass cotton should be ≤ 1.5mg/L, and the hydrophobicity should be ≥ 98%. The end or edge of the sound absorbing and insulating soft curtain can be fitted with embedded metal ring buckles for product suspension and installation. The inner and outer sides of the edge can be equipped with mother child Velcro for splicing and sealing to prevent sound leakage. Metal ring buckle holes and Velcro can be designed according to customer plans and installed in designated locations.