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+86 15824687445
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Nrog ntau tshaj 500,000 tons ntawm cov khoom muag, GNEE muab kev xaiv dav dav ntawm cov khoom siv yeeb nkab steel: API 5CT casing thiab tubing, API 5L kab kav, API 5D laum kav, 3PE thiab FBE coated kav, nrog rau ntau yam yeeb nkab fittings. Tag nrho cov khoom muaj nyob rau hauv raws li GB, ASTM, JIS, DIN, thiab lwm yam thoob ntiaj teb cov qauv kom ua tau raws li ntau yam kev xav tau.