Indonesia's import 400g black cardboard black cardboard

Black cardboard series: duplex black cardboard (also called single black cardboard): both sides of the paper, one side gray, black on one side alone through black cardboard: both sides of paper are black, two black contrast, some color double penetration black cardboard: both sides of paper are black, two black contrast, no color pure pulp and paperboard: high-grade black cardboard, compared to single and double penetration, better quality, the price is higher than some black cardboard appropriate weight range : duplex black cardboard: 250G-450G forming, 500G or more processing plants may be a single through the black cardboard: 180G-600G forming, 600G or more processing plants can double through black cardboard: 80G-450G forming, 500G more than pure pulp processing plant may black cardboard: 80G-450G forming, 500G or more factories on behalf of black cardboard conventional application process: the album pages, frames backplane, gift boxes, jewelry boxes, phone boxes, shoes quality boxes, clothing tag, notebook covers, calendars, hand bags, stereo speakers and a variety of electronic products, handicrafts pads black cardboard packaging to distinguish: 1. Look: good black level, smooth and delicate, no impurities, white point oil spot is dark outside card. 2. Fold: Fold twice easily burst line, or broken card was not dark outside, and vice versa. 3. tear: torn paper core white, impurities are not good black card. Haohei card Zhixin darker, even paper materials, fewer impurities have our black cardboard by SGS report, halogen Report!