No. 6 Valve Standard in 2011 Approved Release Announcement 11 Begins
January 24 18:08:44, 2019
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The National Bureau of Quality Supervision, Inspection and Quarantine and the National Standardization Administration approved 192 national standards such as "hydrofluoric acid of chemical reagents" to be released at the end of April this year. The standards for valves will be implemented starting from October 1 this year.