A month. According to the official information of Guizhou Provincial Education Bureau, the examination will be conducted 30 days after the certificate of fire facility operators is successfully employed. The examination subjects are divided into theoretical knowledge examination and skill assessment. The theoretical knowledge test is mainly written test and computer test, and the skill test mainly adopts on-site operation and simulation operation. Therefore, it takes one month to test the ranking of 2700 operators in Guizhou Fire Protection.