"The volume of Iran's exports to China has increased considerably in terms of weight in the first four months of 2017 and amounted to 21.12mln tons, setting a record 31% boost compared with the same period last year," Khaji said on Wednesday.
Noting that China is the largest importer of Iran's non-oil products, he said the volume of the country's non-oil exports to China has reached 11.59mln tons, showing a 66% increase compared to the previous year.
Iran exports around 40 percent of its petrochemical products and 60-70 percent of the country’s polymer materials to China.
On Tuesday, Managing Director of the National Iranian Petrochemical Company Marziyeh Shahdaei categorically dismissed that her company's assets have been frozen in China.
"Iranian assets have not been frozen in China, but there are some difficulties in the payment process," Shahdaei told reporters.
She reiterated that the main cause for the current difficulties is that anti-money laundering laws have come into effect in China since the beginning of May, under which some strict restrictions have been placed on exports of petrochemical products and transfer of money.