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No.888 Hubin North Road,Dezhou City,Shandong Province,China China
連絡先担当者 Mr. james zhu
住所 No.888 Hubin North Road, Dezhou City, Shandong Province
speed reducer The way to fabricates plane two time envelope ring surface worm reducer: First , take a plane as generatrix , the plane circles round
DESIGN AND MANUFACTURE OF ACCESSORIES AND EQUIPMENTS OF PETROLEUM DRILLING MACHINERY, SUCH AS TUBING, CASING, PUB JOINTS, COUPLINGS, DOWNHOLE MUD MOTO
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