The periodic test of the nozzles of CNG stations in Qazvin, Ardabil, Gilan and Kermanshah provinces is being carried out with the permission of the National Center of Metrology of the Iranian Standards Organization.

Pouyandegan Behboud Keifiat Laboratory (P.B.K.) is the first Iranian company to start testing the CNG nozzles in the country since 2016 by providing the necessary equipment and compiling the necessary instructions.