WORK NO. 12 All-Inclusive Annual Maintenance and Repair Contract for Various Air-Conditioning Machines Installed at Different Premises under the Jurisdiction of West Zone, Surat Municipal Corporation. WORK NO. 14 Annual Rate Contract for Maintenance and Repair Services of Various Motor-Pump Sets Installed at Different Premises under the Jurisdiction of West Zone, Surat Municipal Corporation.(2nd Attempt) WORK NO. 15 All-Inclusive Annual Maintenance Contract for Various UPS Units and Rate Contract for Batteries Installed at Different Premises under the Jurisdiction of West Zone, Surat Municipal Corporation.(2nd Attempt)