Tender For corrigendum : supply of sucker rod pump (srp) surface unit api c-228d-213-120 with motor and vfd panel , sucker rod pump (srp) surface unit api c-320d-256-120 with motor and vfd panel , sucker rod pump (srp) surface unit api c-456d-365-144 with motor and vfd panel , sucker rod pump (srp) surface unit api c-640d-365-168 with motor and vfd panel