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Industry news
10 valves national standard will come into effect on July 1
By the state administration of quality supervision, inspection and quarantine, the national standardization managemen detail
Petroleum and chemical industry structure adjustment action plan in the last thr
On December 22, China petroleum and chemical industry federation of industry structure adjustment action plan three detail
Accelerated to break the monopoly of independent public oil intends to integrate
Domestic media recently learned that petrochina is preparing to plan, its natural gas pipeline business integration detail
