... /m2 non woven fabric Pocket Spring Unit / Pocket Coil units for Mattress and Sofa, Cushion Pocket Spring Unit / pockety Coils Specifications:High-Carbon ... 3.8mm. ISO 9001:2000, Compression Resistance 80000 Times.For Mattress, Cushion, Sofa, Guarantee 15 Years.Roll or Flat Packing. OEM ...