Product advantages 1. Protection performance. The packaging should protect the contents so that its performance and reliability are not affected by external mechanical factors such as impact or vibration, environmental substances such as water or air, and climatic conditions (such as temperature). 2. Operational performance. For plastic packaging and printing materials, it must first have printability, or the problem of printing fastness can be solved after pretreatment. It is also required to have a certain degree of rigidity and stiffness, which can be adapted to automatic packaging by packaging machinery, suitable for heat-sealing mechanical sealing and bag making, and has the properties of easy filling and easy opening. 3. Delivery and storage performance. The packaging must have a certain degree of compressive strength, and it is not easy to be damaged when subjected to general pressure in the circulation field. The shape of the packaging should be easy to stack and occupy less space. 4. Promotional performance. Packaging styles and colors should be novel, decoration and printing colors should be bright and generous, in line with people's hobbies in the sales area, and have market competitiveness. In addition, it is also required to be free of static electricity to avoid dust pollution.