Selling microparticle modular blocks on Amazon requires CPC certification. CPC certification is a children's product safety certificate that applies to all products that primarily target children aged 12 and below, such as toys, cradles, children's clothing, etc. Therefore, as children's toys, microparticle puzzle blocks also need to undergo CPC certification to ensure the safety performance of the product. When conducting CPC certification, it is necessary to provide detailed information and relevant test reports of the product to prove that it complies with relevant safety standards and regulations.

The guidelines for conducting CPC certification on Amazon for microparticle assembly blocks are as follows:

1. Understanding the requirements and standards of CPC certification: Firstly, it is necessary to understand the specific requirements and standards of CPC certification, including regulations on product materials, structure, safety, and other aspects.

2. Preparation of relevant documents and materials: Before conducting CPC certification, it is necessary to prepare detailed product manuals, test reports, manufacturer's qualification certificates, and other relevant documents and materials.

3. Choosing a suitable certification agency: Choosing a qualified and experienced certification agency for CPC certification can ensure the accuracy and effectiveness of the certification.

4. Submit application and wait for review: Submit the application to the certification body and provide relevant documents and materials as required. Waiting for the certification agency to conduct an audit. If the audit is passed, a CPC certificate will be obtained.