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ISO Certification

The ISO9001 quality management system certification
The ISO14001 environmental management system certification The ISO45001 occupational
health and safety management system certification

Patent Certificate

: Patent 1: A filter device for underground water treatment in coal mine,Patent Number: ZL 2020 2 2649895.5

: Patent 1: A filter device for underground water treatment in coal mine,Patent Number: ZL 2020 2 2649895.5

: Patent 1: A filter device for underground water treatment in coal mine,Patent Number: ZL 2020 2 2649895.5

: Patent 1: A filter device for underground water treatment in coal mine,Patent Number: ZL 2020 2 2649895.5

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