China Tianchen Industrial Corporation, located in Qingdao City, is one of the largest refining-chemical integrated petrochemical companies in China. It is one of the subsidiaries of China Petrochemical Group. It is also currently one of the most important domestic producers of refined oil products, intermediate petrochemicals, synthetic resins and synthetic fibers. China Tianchen Industrial Corporation grew out of Qingdao Petrochemical Complex which was founded in 1970. In 2000, as an expe...