Features: neutral PH, environmental protection dye, 100% recyclable, pollution-free, no color difference on both sides, black interlayer, commercial raw wood pulp, super high stiffness, perfect smoothness and smoothness, strong tensile force, 80-700g per gram at a time, and can be mounted above 700g. Double-sided black through the heart, single-sided black through the heart, single-sided black under gray background, all-black double-sided black through the heart. Its characteristics are: environmental protection dye, recyclable, pollution-free, no color difference on both sides, black interlayer, high stiffness and strong tensile force. 80-700g can be molded at one time, and more than 700g can be loaded. 2. One side is black. Also known as: face light and heart dark.

Features: the two sides are different in color, the front color is dark, the back color is light, and the middle sandwich part is also black. Other characteristics are the same as double-sided black.

3. All black. Also known as: composite infiltration black, interlayer black and light black.

Features: no color difference on both sides, light color on both sides, black interlayer in the middle, mostly used for mounting processing.