How to test mud engineer

Bricklayer's certificate: application conditions: at least 18 years old, on-the-job personnel; Submit a copy of your ID card and a one-inch color photo for registration; Or provide a scanned electronic version, and fill in a state construction professional qualification declaration form. To apply for the first-class certificate, you need to be at least 30 years old and have a college degree or above. Examination time of mason's certificate: you can register at any time, and the examination time is arranged uniformly. After approval, the certificate will be issued in about 1-2 months, and the certificate will be inquired by the human resources and social security departments, which is common throughout the country.