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507 items! The National Standards Commission issued the first batch of national standard plans for 2019, involving multiple types of analysis methods

507 items! The National Standards Commission issued the first batch of national standard plans for 2019, involving multiple types of analysis methods On March 25, the National Standardization Management Committee issued the first batch of recommended national standard plans for 2019. There are a total of 507 plans in this batch, of which 294 have […]