Dongying Tianrui Petroleum Science & Technology co., ltd is located in Dongying city , Shandong province.Our company a manufacturer of drlling equipments and OCTG pipes.In 2008,we successfully passed the ISO9001 Quality System Certification,In 2011,we had right to use API Monogram on our ...
Telephone:86 - 546 - 8730817
Address:No. 92, Huaihe Road , Dongying , Dongying , Shandong China (Mainland) Dongying Shandong 257091 China