From a safety perspective, comparing and evaluating safety certification standards in various countries can help consumers choose power cords that meet safety requirements. The following is a comparison of some common national and regional power cord safety certification standards:

1. Underwriters Laboratories in the United States: UL certification is a common standard for power cord safety certification in the United States. It ensures that the product meets relevant safety standards in the United States and ensures safety through testing of wire insulation materials, voltage withstand tests, temperature, and other aspects.

2. European CE certification: CE certification is a certification requirement that power cords sold in the European Economic Area must meet. It covers the requirements of product safety, health and environment, including electric shock risk, Electromagnetic compatibility, etc.

3. Canadian Standards Association: CSA certification is a Canadian standard for power cord safety certification. It is similar to UL certification, ensuring that the product meets Canadian safety standards.

4. China CCC certification (China Compulsory Certificate): CCC certification is China's mandatory certification system, which is applicable to all power cords sold in the Chinese market. It covers the requirements for electrical safety, fire performance, and other aspects of the product.

5. Japanese PSE certification (Product Safety of Electrical Appliances and Materials): PSE certification is a Japanese standard for power cord safety certification. It ensures that the product complies with Japanese electrical safety standards and tests the materials, withstand voltage, etc. of the wires.

When evaluating the safety certification standards of these countries and regions, the following factors can be considered:

-Certification scope and requirements: Different standards may have different certification scope and requirements, and it is necessary to ensure that the purchased power cord is suitable for specific usage scenarios and devices.

-Testing methods and standards: Each certification standard has its own unique testing methods and standards, and it is important to understand whether these testing methods and standards meet user needs and provide sufficient protection.

-Reputation and compliance: Select manufacturers with good reputation and compliance to ensure that products meet relevant standards and have reliability.

In summary, by comparing and evaluating safety certification standards in various countries, consumers can choose products that meet safety requirements when purchasing power cords. In addition to the standards mentioned above, attention should also be paid to local laws and regulations and user evaluations to comprehensively evaluate the safety of power cords.