In formal meetings, putting your hands in your pockets, chewing gums and blowing your nose loudly is impolite. When talking, do not point at or gesticulate in the direction of a particular person. Appointments must be made well in advance. Respect the religion and customs of Iranians. Do not address people by their first name unless asked to do so.
Titles are important.
Executives are often addressed by academic rank or title. Appreciation of what you have been offered to eat is welcomed. No alcohol is served and pork is never eaten. Do not enquire about family matters from the person with whom you have not intimate relations. Gifts are appreciated but not expected.