ISTANBUL — Israeli business executives here like to point out that most of the angry Turks who protested Israel’s deadly raid on a Turkish-led flotilla to Gaza this past spring do not know that their cellphones, personal computers and plasma televisions were made using parts and technology from Tel Aviv.

For Menashe Carmon, chairman of the Israel Turkey Business Council, such ignorance is a blessing for Israelis and Turks.

“Turks would find it very hard to boycott Israeli goods because you won’t find any in Turkish supermarkets,” Mr. Carmon said. “But most of the software Turks use in everything from cell phones to medical equipment is made in Israel. So unless Turks want to stop using their computers, boycotting Israel would mean punishing themselves.”

After the raid, in which nine Turkish citizens were killed on May 31, Turkey demanded an apology that it has yet to receive. It barred Israeli military planes from Turkish airspace, while its Islamist-inspired prime minister said the world now perceived the Nazi swastika and the Star of David together, according to the Hurriyet Daily News, a Turkish newspaper critical of the government.