Tender For corrigendum : supply of stabinger viscometer - 9155015494 , camc charges first year 1su 6 months of service units , camc charges second year 1su 6 months of service units , camc charges third year 1su 6 months of service units , camc charges fourth year 1su 6 months of service units , camc charges fifth year 1su 6 months of service units