Results are expected to be announced later on Thursday.
GASC is seeking an unspecified amount of wheat from global suppliers for shipment for July 25-August 5.
Traders said the following offers were made in dollars per tonne on an FOB basis:
Ukraine
*Venus: 55,000 tonnes at $190.88
Russian
*ADM: 60,000 tonnes at $198.85
*GTCS: 60,000 tonnes at $196.85
*Daewoo: 60,000 tonnes at $196.75
*Aston: 60,000 tonnes at $204.00
*AOS: 55,000 tonnes at $195.95
Romanian
*ADM: 60,000 tonnes at $197.97
*Cerealcom: 60,000 tonnes at $193.94
*Cofco: 60,000 tonnes at $195.00
*Glencore: 60,000 tonnes at $196.20
*Friends: 60,000 tonnes at $203.00
French
*Casillo: 60,000 tonnes at $196.69