Recently, the Energy Bureau released Document No. 9 of 2018，Announced the abolition of a number of recommended industry standards in the energy field and the suspension of a number of recommended industry standard plans in the energy field。JJG is included in the content(petroleum)07- 1999204 recommended industry standards in the energy field, such as "Verification Regulations for Mechanical Downhole Pressure Gauges".,Suspend 99 recommended industry standard plans in the energy field, such as the "Anti-interference Test Regulations for Secondary Equipment of Substations of 750kV and above".。
