Applicability of " National Treatment" in WTO Regulations over Iranian Tendering Act

By Iranian “Tendering Act” and its directives, there are many discrepancies between Iranian tenderer and foreign ones in selecting and evaluating processes and preparing the long and short lists in Iranian legislation.
It is an invetible necessity for Iran to look into the “GATT”, “GATS” and “Public Procurement Agreement” before joining WTO. Mentioned documents and current practical judgements which have been declared by international resolution tribunals have stated many regulations to isolate any kind of discriminations for member states, although many exclusions have been determined by the “PPA” which considering the “sovereign acts” of the government.
However the object of the purchase has to be considered by Iranian “Tendering Act”, in “PPA” regime the subject of the purchase is essential. Subsequently in Iran some corporations have to promulgate a tender while they are acting practically as a private trader.
As the result of the research, although it is possible to suspend some of obligations in short term for developing aims by referring to practical process which has been taken by China in joining process, there are two ways in front of the Iran in long term; do not join to the “PPA” or apply some corrections in “Tendering Act” which may deem to some internal and financial developments in case of collaborating to “WTO”.