Beijing Dilong Chemical Co.,Ltd.located at Yanshan petrochemicals industrial development zone in southwest of Beijing and engaged into research and production of antioxidants and antistatic agent for many years with the area of 60000 square meters, floor space of 20000 square meters, The fixed asset of 50,000,000 Yuan, it is under Beijing Yanshan Petrochemical Co.,Ltd. The products mainly sold to large petrochemical enterprises in domestic of yearly revenue of 600,000,000 Yuan, export of 30,000,000 US dollars. We co-operated with many universities, colleges and institutes, development facility and invested 12,000,000 Yuan to produce the YD-T1501 antistatic agent in 1998 passed National Department appraisal.