oxygen equipment supplier in Chaoyang Qu

International SOS provides services to individuals, corporations, and organizations for medical assistance, international healthcare, security and outsourced customer care, evacuation, Avian Flu …

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西门子(Siemens)是全球领先的科技企业，凭借电气化、自动化和数字化领域的创新，在发电和输配电、基础设施、工业自动化、驱动和软件等领域为客户提供解决方案。

斯伦贝谢公司是全球最大的油田技术服务公司,主要从事油田服务和地震数据采集处理业务,总部位于纽约、巴黎和海牙，在全球100多个国家设有分公司，是世界500强企业。

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