Key Changes in New National Uniform Standards

The new GB/T 31888 standard introduces significantly stricter requirements compared to the old version across multiple dimensions.

Major Safety Index Improvements

Formaldehyde: ≤20mg/kg (infant textile Grade A standard). pH value: 4.0-7.5 (near skin pH). Decomposable aromatic amines: must not be detected. Flame retardancy requirements explicitly added.

Comfort Performance First Added

Breathability: ≥200mm/s for summer comfort. Moisture permeability: quick sweat evaporation. Abrasion resistance: Martindale ≥2000 cycles.