Why did Petroleum Daming withdraw from the market?

China Petrochemical invited to purchase. Petroleum Daming was bought by China Petrochemical Company at the invitation, and its listing was terminated on April 2, 20061day. Petroleum Daming is a comprehensive group, relying on its subsidiaries to provide users with services in petrochemical industry, cogeneration, oil and gas technical services, education investment, transportation and logistics, engineering construction, waterproof materials, new building materials, environmental protection engineering and other fields. Founded in Dongying District, Dongying City, Shandong Province.