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Certification

DDO always implements international quality management standards ISO 9001 to ensure the good quality control measures are taken in every production step. At the same time, DDO has established systematic and standardized environmental management measures in accordance with the management concept of safety and environmental protection and the business policy of sustainable development. Undoubtedly, DDO obtained the environmental management system ISO 14001 qualification in 2019.

The corresponding certificates are listed as below:

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ISO 9001:2015 Certificate


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ISO 14001:2015 Certificate

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