White coated paper is also called art paper. It has a very   smooth and flat surface.    It has a very high whiteness, smoothness, and ink-friendly.    Therefore, it’s the most used material in the printing and    packaging industries. 

Coated paper is applicable for almost all kinds of printing    methods, including CMYK (full-color offset printing), PMS    (Pantone colors printing), and screen printing.    The colors printed on coated [224]paper packaging boxes are    bright and full.