Substance: Weight of a square meter of paper in g/m2

Long Grain Direction: Paper fiber directions parallel to the long side of the papermaking machine

Short Grain Direction: Paper fiber directions parallel to the short side of the papermaking machine

Coated paper: paper that is coated by an inorganic compound to create surface gloss and smoothness for high quality color printing

Uncoated Paper: paper that is not coated and has a rougher surface for good ink absorption and normal color printing

Roll: Roll-packed paper marked with width (mm), length (m), weight (kg), and substance (g/M2) suitable for high-speed rotating press printing machine.