ADDENDUM NO. 1 - NCWSC/31/2020 - CONSTRUCTION OF CHAMBERS FOR SMART ULTRASONIC WATER METERS AND THEIR COMMUNICATION SYSTEMS ADDENDUM NO. 1 - NCWSC/31/2020 - CONSTRUCTION OF CHAMBERS FOR SMART ULTRASONIC WATER METERS AND THEIR COMMUNICATION SYSTEMS Complete the form to download Please enable JavaScript in your browser to complete this form.Name *FirstLastNumber *Company Name *Email *Submit