Minister of Energy Mohammad bin Dhaen Al-Hamli of the United Arab Emirates (UAE) said that many Arab countries are investing heavily in the petrochemical industry relying on their huge oil and gas reserves. Arab countries, including the oil exporting countries, are working on expanding economic and trade cooperation, Al-Hamli told reporters in Cairo. Arab oil ministers concluded here today the 85th ministerial meeting of the Organization of Arab Petroleum Exporting Countries (OAPEC). The UAE minister hailed the outcome of the meeting which aims to further bolster intra-Arab oil cooperation, WAM reported.