Excuse me, what are coated paper and grey card? Gold and silver cards. What else?

Coated paper, also known as coated printing paper, is called coated paper in Hong Kong and other regions. It is a high-grade printing paper made of base paper coated with white paint. It is mainly used for printing the covers, illustrations, color pictures, advertisements, samples, packaging and trademarks of all kinds of exquisite commodities. Chip board is actually 18% grey paper. Gold card paper is hard in texture, glossy in surface and rich in color, which is mostly used for cigarette packaging.