Where can I apply for a crane special operation certificate in Chongqing?

1. pressure vessel operation certificate 1. Operation of pressure vessels (including pressure sealing and tank car filling) II. Cylinder filling 3. CNG filling. 4. Maintenance of medical oxygen chamber; 2. Boiler operation certificate (including water quality test)1; Boiler operation II. Water treatment operation; 3. Elevator Operation Certificate1; Mechanical installation and maintenance. Electrical installation. Electrical maintenance. Elevator driver; 4. Hoisting machine operation certificate1; 2 bridge crane drivers; 3 tower crane drivers. 6 railway crane drivers, 7 reserved lifting cables, 8 gantry crane installation maintenance workers, 9 tower crane installation maintenance workers, elevator maintenance and operation workers 10, construction elevator installation maintenance workers 1 1, mechanical parking equipment installation maintenance workers 12, and crane operators1. Electrical maintenance, cable engineer, conductor and driver), V. Passenger ropeway operation certificate 1, installation 2, maintenance 3, driver 4, cable arrangement 6. Forklifts and forklifts with motor vehicle operation certificates in the field (factory).