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In 1993, Together with Bohai marine co***ny jointly developed, instead of foreign high-pressure refractory pipeline, and in the offshore oil instead of foreign products. In 1996 ,at the Lake Jingpo meeting, to achieve the promotion of land oil hose. At the meeting of the 1998 blowout drill in Guanghan, our co***ny 's Refractory pipeline was tested by fire. In 2000, the products of the Great Wall drilling (GW) and China Petroleum Technology Development co***ny (CPTDC) were exported to Turkmenistan, Iran, Ven...
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