Coated paper is divided into single-sided and double-sided. The paper is white, high smoothness, strong adhesion, strong water resistance, and the ink can show a bright white background after printing. It is suitable for multi-color printing, color after printing Bright, rich in layer changes, clear graphics, suitable for printing gift boxes and export paper cans packaging and hang tags, low-gloss thin coated paper is suitable for box paper, bottle stickers, canned stickers and product samples.

As packaging materials, paper packaging materials have unparalleled advantages of other packaging materials, such as: their sources are relatively wide, the price is relatively cheap, they have good elasticity and toughness, they have good protection for the packaged objects, and they are mechanically operated.

In the early days of mankind, the rapid economic development was carried out by means of plundering natural resources without hesitation. Mankind was also retaliated. Environmental degradation, frequent natural disasters, and abnormal climates all directly threatened human survival and commodities The reason why packaging is called "garbage culture" by everyone is because of the research and development of packaging and packaging alternative materials, the recycling of waste packaging has been developed and a new industry has been formed.

The origin of glass and Egypt. As early as the 16th century BC, the ancient Egyptian wine invented the method of producing glass containers by using the hot stone method.