In old China, there was hardly any machine-building industry.
旧中国几乎没有机器制造工业。
Have experience in petrochemical industry and machine building industry, 3 years work experience;
有石油化工机器制造、检验背景，工作经验三年以上；
Have experience in petrochemical industry and machine building industry, 3 years work experience;
有石油化工设备制造、检验、监理背景，工作三年以上；
Have experience in petrochemical industry and machine building industry, 3 years work experience;
有石油化工设备制造、检验、监理背景，工作三年以上；
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