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A large degree of industrial development and the progress of human civilization is built on the basis of the petroleum energy, and the dependence is worsening, and petroleum energy is non-renewable energy, and accompanied by the use of oil, extreme environment pollution. .....
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TEL:029-86962183 FAX:029-86962183 Mail:sanm597@163.com  ADD:Xi'an ZhuQue middle of the street on the 20th