a well-known card and a notification card are two different signs. The weekly knowledge card, also known as the hazardous waste weekly knowledge card, is used to specify the types, hazardous characteristics and disposal destination of hazardous waste in enterprises, and is a specific warning sign. All industrial hazardous waste generating units need to establish a well-known card system. The notification card is used to indicate and inform the on-site staff in the workplace of the occupational hazards, and list the possible health hazards, physical and chemical characteristics, emergency treatment, protective measures, etc. The main difference between them lies in the different targets, which are as follows:

1. Different targets: the well-known card is mainly aimed at enterprise hazardous waste, while the notification card is mainly aimed at occupational hazards in the workplace.

2. Different purposes: The purpose of the weekly knowledge card is to clarify the types and disposal destinations of hazardous wastes in enterprises, so as to carry out safety management; The purpose of the notification card is to inform the staff of the occupational hazards in the workplace and their protective measures to ensure the health and safety of employees.

3. Different functions: the well-known card is mainly used for the management and disposal of hazardous wastes, while the notification card is mainly used for occupational disease protection in the workplace.

In a word, both the well-known card and the notification card are signs set up to ensure security, and the difference between them lies in their different targets and functions.