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ZT DRILL PIPE CEMENTING HEAD
ST DOUBLE-PLUG CEMENTING HEAD
DS SINGLE-PLUG CEMENTING HEAD
STOP COLLARS
GFZ-A RIGID CENTRALIZER
DCT-C NON-WELDED DOUBLE-BOW CENTRALIZER
DCT-B NON-WELDED BOW SPRING CENTRALIZER
FG-F NON-RATATING FLOAT COLLAR
Qingdao Hongbo Petroleum Machinery Co., Ltd.
Address:Hi-Tech Industry Zone,Jimo,Qingdao,China 266000
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