No.791 Shanghai Popularity Ranking No.81 Minxing District No.2 Lian Chemical No.3 Ocean Petroleum No.3 Chemicals Energy No.3 Oil and Gas No.4 Lian Oil No.5 Yi Yao Jing Ji No.6 Lian Oil Technology No.7 Shi You Tian Ran Gases No.8 Petroleum No.9 Plain Oil No.9 Chemical Raw Materials No.9 Natural Gas 国家专利 高新技术企业 市级高新技术企业 省级创新型中小企业 省级专精特新中小企业 市级创新型中小企业 专利示范企业 市级专精特新中小企业 省级高新技术企业 专精特新小巨人企业 ISO9001认证