1. Physical indicators: quantitative, moisture, compactness, rupture resistance (rupture index), cyclic pressure strength (cyclic pressure index), positive/reverse water absorption, and folding resistance.
2. Appearance indicators: smoothness, color difference and whiteness.
3. Specific raw paper standard reference: GB13023 (corrugated national standard), GB13024 (box board national standard).Refer to the latest industry trends or standards for related projects.