How to check the certificate of tower crane signalman?

You can inquire in the State Administration of Work Safety, and the operation method is as follows:

1, Baidu Search Safety Supervision Bureau, click to enter the first official website in the search results.

2. After entering official website, click the service option.

3. Click the query service in the service option drop-down box.

4, click on the query service in the special operation certificate and safety production knowledge and management ability examination qualified information query options.

5. Enter the correct relevant information as needed, and then click Query.