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北京城建四公司于 1996年通过 ISO9002质量管理体系认证， 1999年通过 ISO14001环境管理体系认证， 2000年又通过了职业安全卫生管理体系认证，成为全国首批具有“三把金钥匙”的国有大型建筑施工企业。 有这样一组工程，展示着北京城建四公司坚实的创优之路：北戴河国务院
Beijing Urban Construction Fourth Company passed ISO9002 quality management system certification in 1996, ISO14001 environmental management system certification in 1999, and occupational safety and health management system certification in 2000, becoming the first state-owned large-scale construction with “three golden keys” in the country. construction company. There is such a group of projects that demonstrate the solid road to excellence of Beijing Urban Construction IV: Beidaihe State Council