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2019-01-04 [Download Area] Introduction to Premium Connection Product
2022-09-28 [Download Area] API 5CT Certificate
2021-05-19 [Application] The Deepest Onshore Well in Asia
2022-09-28 [Download Area] API 5L Certificate
2018-12-03 [Application] Hong Kong-Zhuhai-Macao Bridge
2022-09-28 [Download Area] API 5DP Certificate
2018-12-03 [Application] Exploiting? Natural Gas Hydrate in South China Sea
2024-03-12 [Download Area] ISO9001 Certificate issued by SGS
2023-08-25 [Download Area] Environmental Management System Certificate
2023-08-25 [Download Area] Occupation Health and Safety Management System Certificate
2023-08-25 [Download Area] Measurement Management Certificate
2022-08-04 [Download Area] Lloyd Certificate for Billets of Carbon-Manganese & Alloy Steel Pipes
2022-08-04 [Download Area] Lloyd Certificate for Carbon-Manganese & Alloy Steel Pipes
2019-01-04 [Download Area] BV Recognition Certificate
2019-01-04 [Download Area] BV Certificate for 37Mn & 30CrMo & 34CrMo4
2022-11-29 [Download Area] BV Certificate for Gr.6 & Gr.8 Steel Pipes
2022-06-09 [Download Area] DNV Certificate for Carbon-Manganese & Alloy Steel Pipes
2023-03-08 [Download Area] DNV Certificate for Structural Steel Pipes
2022-03-23 [Download Area] CCS Certificate for Carbon-Manganese Pressure Pipes
2022-01-19 [Download Area] ABS Certificate for Structural Pipes

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