factory production full wood pulp copy paper processing white paper scratch paper office supplies high whiteness cross-border a4 printing paper

[us standard, not a4] ls 21lb 216 x 279mm [cross-border inclusive option] a4 80g [cross-border inclusive option] a4 70g [foreign trade quality choice] a4 80g [aa-grade high-whiteness, same origin] a4 85g [foreign trade quality choice] a4 70g

2,500 sheets 2,000 sheets 1,000 sheets 500 sheets