The Characteristics Of Tapered Sealing Element:1.The product can match and interchange most of domestic BOP manufactories, (such as Shanghai Shenkai,Huabei Rongsheng,Chuanyou Jingkong,Baoshizuancaichang, Jiangsu Xinde,Jiangsu Sanyi,etc). Over the years usage in the oil fields, it has been proved...
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