I don't know what kind of management system certificate you have. I worked in management system, and worked in ICTI ISO900 1:2008, ISO 1400 1:2004, calibration room. None of our certificates will be signed and covered by annual inspection labels, such as CNAS, ACLASS and STIT in our laboratory. . . . . CNAS issued a certificate in the first instance CNAS 2009, which needs to be re-evaluated and supervised, and a new certificate is issued every time. The certificate shall specify the time of preliminary examination, the time of supervision and evaluation and the validity period.

You have to tell me what management system certification is.