ZHENGZHOU JINGCAN SECURITY ENGINEERING CO., LTD

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ZHENGZHOU, CN

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Patents Grantslast 30 patents

Information Patent Grant
Life-saving system for fire in multi-storey building
- Patent number 9,682,257
- Issue date Jun 20, 2017
- ZHENGZHOU JINGCAN SECURITY ENGINEERING CO., LTD.
- Jingcan Zhao
- A62 - LIFE-SAVING FIRE-FIGHTING