"Kayan announces the start of commercial operations at most of the company's plants in Jubail Industrial City starting from Saturday," the company said in a statement on the bourse website. 

Saudi Kayan has an annual production capacity of over 4 million tons of petrochemical and chemical products including aminoethanols, aminomethyls, dimethylformamide, choline chloride, dimethylethanol. 

On Saturday, the company started production at its polypropylene plant with an annual capacity of 350,000 tons, its 400,000-ton polyethylene plant, its 260,000-ton per year polycarbonate plant its 566,000-ton ethylene glycol plant, the statement said.