1.High surface roughness of paper

2.Stretching Rate of Paper

Temperature (℃)   Humidity (H) Vertical Dimension (mm) After Change (mm) Time (H)

25                  50%        1000                   1000              2

3.Most ideal printing environment: Temperature: 25℃ / Humidity: 45%-55%

4.Precision of paper size: The tolerance should be lower than ±0.2mm.

5.Knockout speed of paper: Time: 40s ±10s (knock out in water) / 6s ± 10s (BC liquid)

6.Match between precious African acacia senegal gum and starch.Low expansibility of hydrosol / High homogeneity / High reproducibility of ink color

7.No acid reaction /PH value: 6.8-7.2