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CHINA DONGHONG COMPANY LIMITED

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International Certifications & Standards

From factory management and quality control to product standards and international market requirements, our certifications provide documented assurance of compliance throughout the manufacturing process.

210+

Patents

9

National Standards

6

Industry & Group Standards

1

CNAS-Accredited Laboratory

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API 15L
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API 5L
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5-Star After-sales Service Certificate
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WRAS Certificate-pipe
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Need a specific certification?

If you need any specific documents or have any questions regarding our certification, please contact us. We are more than happy to assist you.

Contact Us

International standard certification

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+86 139 5478 9666

+86 198 0537 9190

dhpipe@dhguanye.com
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