This is the symbol of CMA. C is the outer frame. This is the symbol of national metrology certification. With this sign, it shows that the applicant has passed the metrological certification of the relevant state departments. It is a third-party testing organization.

It should be noted that the small print below indicates a code name, including the elapsed time. At present, it usually takes three to four years to review and renew the license. If we change this year from 2009 to 2007, there must be something wrong. The certificate issued in 2009 should be ok now.