We has been actively expanding into on-site equipment inspection,testing,overhaul and modification service, to provide integrated solution of oilgas exploration...
Dongying zerui mechanical manufacturing co.,ltd, one of the backbone enterprises of petroleum drilling and production equipment inChina, was established in 1941...
Dongying zerui mechanical manufacturing co.,ltd, one of the backbone enterprises of petroleum drilling and production equipment inChina, was established in 1941...
