Which chemical enterprises in Shaanxi are more powerful?

1, Changqing Oilfield Company 2, Yanlian Industrial Group Company 3, Shenhua Shenfu Dongsheng Coal Co., Ltd. 4, Yanchang Petroleum and Mineral Administration 5, Changqing Petroleum Exploration Bureau 6, Changqing Petrochemical Company of China Petroleum and Natural Gas Co., Ltd. 7, Xi 'an Janssen Pharmaceutical Company 8, Xi 'an Petrochemical Company 9, Yulin Refinery 10, Xi 'an North Huian Chemical Co., Ltd./kloc-. 65438 Shaanxi Shaanxi Fertilizer Co., Ltd. 12, xi 'an xihua Thermal Power Chemical Co., Ltd. 13, Shaanxi Qinling Cement (Group) Co., Ltd. 14, Second Oil Production Plant of Wuqi Petroleum Drilling and Production Company 15, Shaanxi Yulin Natural Gas Chemical Co., Ltd. 16, Xi.