Sunu Sëriñ bi

Am nanu ISO9001 sistem buy yoriinu kalite ci àdduna bi, API Spec 5L, 5CT, ak 5B sertifikaasioŋ yu bawoo ci wàllu Petroleum Petroleum Institute, ISO14001 sistem buy yor environmaa bi ci àdduna bi, ak GB/T28001 sistem bu wérgi-yaram ak kaaraange ci wàllu kaaraange, chaudière u EU ak sertifikaasioŋu kaaraange gaal (PED), ak benn lisence buy defar ay jumtukaay (PED) ak lisence yi.