The Saudi Arabian Tadawul market index added 0.28% Tuesday, closing at 7,930.58 points. Dairy food producer Almarai gained the most (up 10%), while Saudi Electricity was the top losing share (off 5.38%). Global petrochemicals and metals producer Sabic advanced 0.23%. Earlier in the day, Sabic announced the foundation of a polycarbonate project in the Eastern coastal city of Tianjin near the capital Beijing, with an annual production of 260 kilo metric tons in collaboration with China Petroleum & Chemical Corporation, known as Sinopec. “The 50/50 joint venture aims to form a $1.7bn polycarbonate project in Tianjin, which is expected to be operational by 2015,” Sabic said in a statement to the Tadawul bourse.