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Tianjin United Petroleum...
Tubing Coupling, Casing Coupling, Oil Casing, Pup Joint, Coupling Material.
Diversified Lines For Pe...
Trading. Contracting. Inspection. Pipeline Construction. Oilfield Services.
Tubing Coupling, Casing Coupling, Oil Casing, Pup Joint, Coupling Material.
Trading. Contracting. Inspection. Pipeline Construction. Oilfield Services.