Zangeneh met German Energy Minister Sigmar Gabriel on Thursday in Berlin where the Iranian minister is to attend the third annual energy security summit.
They discussed the sale and purchase of petrochemicals and investments in Iranian oil and gas projects, through the transfer of technology and engineering contracts, The Wall Street Journal quoted him as saying.
Iran’s ambassador in Berlin, Ali Majedi, said potential sales of aircraft spare parts were also discussed with German officials.
German companies are vying to regain their foothold which they lost in Iran in the wake of a concerted US and European campaign to pressure the country over its nuclear program.
Both sides are currently in talks with the Islamic Republic to reach a final settlement to their disagreements which would remove sanctions on Iran.
“We are trying to prepare the basis for better cooperation when sanctions are lifted,” Zangeneh said, The Journal reported.