Is it a mandatory national standard GB6675 for children's toys in China? Yes, domestic children's toys must comply with the mandatory national standard GB6675. GB6675 is the safety standard for Chinese toys, which stipulates the safety and quality standards for toys sold within China.

The GB6675 standard covers multiple aspects to ensure the safety of children's toys. Mainly including:

1. Chemical substance requirements: It specifies the limit requirements for harmful chemicals and heavy metals that are prohibited from use in educational toys, such as lead, cadmium, mercury, etc.

2. Physical and mechanical performance requirements: This section specifies the safety of the size, shape, and structure of toys, as well as the requirements for durability, strength, swallowability, and suffocation risk.

3. Combustion performance requirements: The combustion performance of educational toys has been tested and required to ensure their safety in case of fire.

4. Other requirements: such as acoustic performance requirements (noise level limits for sounding toys or noisy educational toys), radiation performance requirements (radiation level limits for educational toys using batteries or power sources), and packaging labeling requirements (regulations for packaging labels and warning labels for educational toys).