As Iran tries to stifle anti-regime protests, human rights advocates and lawmakers are concerned Iranian authorities can draw on sophisticated video surveillance technology provided by a Chinese company that uses U.S. manufactured chips. Tiandy Technologies has sold its surveillance cameras to Iran’s Revolutionary Guards and other security services, according to a Tiandy website and social media posts. Intel Corp., one of America’s major semiconductor firms, lists the Chinese company as a partner, providing Intel-made processors for some of Tiandy’s video recording equipment. Tiandy is one of several Chinese companies at the center of China’s vast domestic surveillance network, experts and…