SIIG is one of the unique company's in the field of improving, and developing the industrial base in the Kingdom, especially, the petrochemical industries, give the opportunity to the private sector to participate in other industries using the petrochemical industries. SIIG established a strong base for itself, represented in its strategic alliance with experienced partner in the field of petrochemical industries; strengthen its industrial and technical capabilities in this field, since Chevron Phillips Petrochemical Company represents a strategic alliance with SIIG. The company was established as a joint stock company according to kingdom regulations with commercial record number (1010139946) issued in Riyadh 1/1/1996 with a capital of (550,000,000) Saudi Riyal divided to (55,000,000) share with a face value of (10) Saudi Riyal per share. The capital increased through profit capitalization, and underwriting of rights issue since the company's capital today reached (4,500) Million Saudi Riyal. The company owns 50% of Saudi Chevron Phillips and Jubail Chevron Phillips, LLC, which are established and registered in the Kingdom. The company shares were inserted in the capital market since February 2004.