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From May 17 to 18, 2014, the company passed the supervision and evaluation of the producer capacity of standard materials/standard samples by the National Accreditation Committee for Conformity Assessment of China.
last：On May 5, 2014, the State Quality Inspection Quantity Letter [2014] 161 of the General Administration of
next：On December 23, 2014, our project "Development of National Standard Samples for Spectral and Chemical
