No.452 Shanghai Popularity Ranking No.9 Jinshan District No.1 Ya Li Rong Devices No.1 Yi Xing Machinery No.1 Ocean Petroleum No.1 Burners No.2 Vocational Healthy No.2 Lian Oil No.3 Ye Hua Tian Ran Gases No.3 Qing Jie No.3 Lian Oil Technology No.4 Plain Oil No.4 Turn-key No.5 Environment Management 高新技术企业 省级高新技术企业 市级高新技术企业 市级创新型中小企业 ISO9001认证 ISO45001认证 ISO14001认证 ASME认证