There are three main differences.

1. Difference between wood pulp used in imported and domestic kraft paper.

1.1 Most imported kraft paper uses coniferous pulp and a small part of broad-leaved pulp.

Its wood pulp raw materials mainly come from Canada and the United States. Its kraft paper production industry is also highly concentrated. Most of them are integrated production of forest pulp. The purity of wood pulp used for kraft paper production is relatively high.

1.2. At present, few domestic kraft paper manufacturers have developed Forest Pulp integration.Most of the wood pulp selected for kraft paper production is imported commercial pulp, and its purity is relatively poor.

2. The difference of bursting resistance and tensile strength between imported and domestic kraft paper.

Because the purity of wood pulp used in imported kraft paper is relatively high, the burst resistance and tensile strength are better.

3. The difference of smoothness between imported and domestic kraft paper.

As for imported kraft paper,the content of long fiber needle pulp is high but not smooth.The smoothness and flatness of domestic white kraft paper are relatively better.