石化工业是我国国民经济的重要基础工业 ,建国以来石化工业蓬勃发展 ,已从一个石化工业小国变成在世界上具有举足轻重地位的石化工业大国。我国主要化工产品有化肥、染料、合成氨、硫酸、农药、纯碱、硫铁矿、磷矿、磷肥、烧碱、醋酸、涂料、轮胎、乙烯、合成材料、基本化肥及? The petrochemical industry is an important basic industry of China’s national economy. Since the founding of the country, the petrochemical industry has grown vigorously and has transformed from a petrochemical industry small country to a petrochemical industrial powerhouse that plays a decisive role in the world. China’s main chemical products are fertilizers, dyes, ammonia, sulfuric acid, pesticides, soda ash, pyrite, phosphate rock, phosphate fertilizer, caustic soda, acetic acid, paint, tires, ethylene, synthetic materials, basic fertilizers and?