特种纸分酸性和无酸纸，无酸纸不会变色，酸性纸都会变色，
Special paper is divided into acid and acid-free paper, acid-free paper will not change color, acid paper will change color.
如果想要达到特种纸的印刷效果有两个办法
There are two ways to achieve the printing effect of special paper.
第一：用特种纸印刷完之后，再UV，后敷膜，这种虽然不会变色，但已经失去珠光的效果。
First, after printing with special paper, then UV, after coating, although this will not change color, but has lost the effect of pearlescent.
第二：用单铜或双铜印刷，之后再压痕出珠光纹理。这个是最完美的，第一不变化，第二效果能实现。
Secondly, printing with single or double copper, and then indentating pearlescent texture. This is the most perfect, first unchanged, second effect can be achieved.