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n4made-in-china.
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Subject Item
isa:357916541
rdf:type
prov:Entity
prov:value
We are mainly engaging in production and sales of oil and gas drilling and extracting equipments and tools; Our products mainly include Tubing, Casing, Coupling, Pup joints; Drill pipe, Heavy weight drill pipe, Kelly, Drill collar; Drill bit etc.
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n4:com
Subject Item
isap:441502553
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isa:357916541