The investments have been in petroleum, wood industry and grain storage silos, Siavash Rezvani, Director General of Ports and Maritime Organization in Amirabad Port told the Islamic Republic News Agency (IRNA).
Products of the industrial units will be exported to Afghanistan and Tajikistan, the official said.
The investments have been done despite the US withdrawal from the nuclear deal in May, and the warnings of President Donald Trump against doing business with Iran, he added.
The highest investment (15 million dollars) has been in petroleum sector that will be implemented under license from a European company, according to the general director.
The industrial process plant will produce Euro-4 gasoline to be exported to Afghanistan via rail network.
Amirabad port in Mazandaran Province is the only port to the north of Iran that is connected to the countrywide railway network.
9156**1397
Follow us on Twitter @IrnaEnglish