There is black paper board with grey back , C1S Black paper board and C2S Blackc paper board for the black paper board . Same as duplex board ,thick and firm,It has a high degree of stiffness and smoothness.And the characteristic for black paper board is exquisite, paper cores is black .Black paper board is widely used in making paper bag ,gift boxes ,hangtag sticker. Since the black paper board is special paper ,is pure black ,so if it is printed on its other colors are invisible ,not suitable for printing. But ,black paper board can carry on other process processing ,such as UV,Hot Staming , laser treatment ,and so on .

Visually give a person a kind of high-grade atmospher visual Sense if the Black paper board is Hot Treatment.
It is the common packaging paper in the daily life. Black paper board is also often used in drawing artworks ,On black card paper with water powder sketch, give a person a kind of different aesthetic feeling!
You can try it if you have time ~