≥120cm length for the extension tube, ≥40cm Length for the branch tube.
Clean, soft, no holes,no cracks,no burr, no smell; Tube transparent, thickness uniform, no dead fold.
Nasal frame type: Bi-nasal type, single nasal type, Ear-hanging type
Tensile force: ≥15N.
Ethylene oxide residue <10mg/kg.
Dimensions: 2m 3m 4m 6m 8m 10m