Our products are produced strictly follow the API 5CT standard. Meanwhile our company also has passed ISO9001 audit.
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Standard:API-5CT Number:1417 |
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Standard:API-Q1 Number:4558 |
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Standard:ISO |
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Standard:GOST Number:632-80 |
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Standard:GOST Number:P53365-2009 |
Contact Person: Ms. Lily
Fax: 86-510-85229648
