1. quality mark: it is applicable to export commodities that meet the national quality product standards or foreign advanced standards, as well as imported commodities that meet the requirements of import trade contracts or the quality standards of foreign manufacturers. The quality of this commodity reaches a certain standard, and the quality mark can be used to show its high quality.

2. Hygienic signs: applicable to products that meet the national food safety and hygiene standards or other relevant hygiene standards. These commodities need to meet the hygiene standards during production and processing to ensure the health and safety of consumers. The use of sanitary signs can indicate that the goods are hygienic and qualified.

3. Safety signs: applicable to export commodities that meet national and international land safety standards and regulations. Import and export commodities need to comply with national safety regulations and standards. This kind of goods can use safety signs.