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NO.37 Qilianshan Road,Shengli industrial Park,Dongying,Shandong,China China
Crossover Subs are used for crossing over from the size of a single connection to the other in the drill string. They are also used for prolonging the
Persona de contacto Ms. Tracy Ren
Dirección NO.37 Qilianshan Road,Shengli industrial Park, Dongying, Shandong
We will contact you soon .
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