Measures that shareholders can take if they are unable to sign abroad are:

1. Authorized agent: Shareholders can entrust an agent to sign documents on their behalf. The agent must obtain legal authorization and provide relevant documents. Supporting documents.

2. Digital signature: Using digital signature technology, shareholders can sign remotely if they are unable to sign abroad. Online platforms or digital signature service providers can provide corresponding solutions.

3. Mail the original documents: If shareholders are unable to sign abroad, they can send the documents that need to be signed back to China by express or mail, and indicate the shareholders' wishes and instructions to ensure that the documents are officially effective.