联合已成为世界石化企业的重要发展趋势史苑芗杨昌正邵寅初从１９５４年世界上第一台乙烯裂解炉投产运行起，世界石化工业经过四十多年的发展，已成为美国、日本和欧洲等发达国家经济发展的支柱产业，近十多年来也成为包括中国在内的许多发展中国家经济发展的重点产业。八... The alliance has become an important development trend of petrochemical companies in the world. Shi Yuanzhang Yang Changzheng Shao Yuchu Since the world’s first ethylene cracker was put into operation in 1954, the world’s petrochemical industry has developed over the past forty years and has become developed in the United States, Japan, and Europe. The pillar industries of national economic development have also become key industries for the economic development of many developing countries including China in the past decade or so. Eight...