1. The density of each filament must be greater than 0.42N/tex, and it is deemed unqualified if it is lower than 0.42N/tes.
2. Elongation, elongation at break 15%-25%, more than 25% is unqualified.
3. Width, warp wire: ±0.01mm, weft wire: ±0.1mm
Thickness: Warp wire: ±0.005mm Weft wire: ±0.01mm
4. The deviation of weight and linear density of monofilament is less than or equal to 3‰.
5. The warp and warp are 5.5cm-12cm, and the weft are 5.5cm-8cm. The winding spindles are flat, and the surface is flat and smooth, without obvious fuzzing, well-formed, and no multi-end filaments, hair-end filaments, and the number of each bag is standard.
6. Color: It must be pure according to process requirements.
7. Inferior silk: silk whose appearance and density do not meet the standard requirements.