The packaging box refers to a folding carton or a micro-corrugated carton made of two materials: cardboard and micro-corrugated cardboard. The material of the packaging box can be divided into two categories: one is facial paper, and the other is pit paper. Commonly used packaging boxes include gray copper, single copper, cupronickel, gorgeous card, silver card, gold card, platinum card, laser card, etc. “Whiteboard with white background” refers to: cupronickel and single copper. The common feature of copper-nickel alloy and single copper is that both sides are white. The difference is: “Copper-nickel alloy” is smooth on one side and not smooth on the other side. In layman’s terms, the front side can be printed, but the reverse side cannot be printed; the front and back sides of the “single copper” are coated on both sides, and both sides can be printed.
“Gray bottom gray board”, there is this kind of paper, but it is not used on the box; “Gray bottom whiteboard”, it is the so-called “gray copper paper”, that is, the front side is white and can be printed, and the backside is gray. Can not be printed. The general white card is also the “whiteboard with white background” paper, which is the abbreviation for general quotation (except for special white cards, such as platinum cards and silver cards).