How long can I get the certificate after the training of Guangzhou refrigerator operation certificate?

Guangzhou cold machine operation certificate training can be obtained in about one month. Refrigerator is a special type of work stipulated by the state, which is also commonly known as refrigerator. Refrigerators need training and certification. The main job of the refrigerator is to operate the refrigeration system. Refrigerators are technical jobs. This certificate is divided into two categories: 1, refrigeration and air conditioning equipment operation. 2. Installation and maintenance of refrigeration and air conditioning equipment.