In addition, non-coated paper in high-humidity environment of sulfide, chemical pulp and fill applicatron dottle out acid melted, making of gold and silver monlchamus nigrescent who lose their luster.
此外,否涂料纸在矮湿度的境况下,化学纸浆的硫化物以及增添料洋的磕酸矾土感化,也会使纸上的金、银朱发黑而获得光华度。