GWT has successfully passed its annual 4-day audit with NSF-ISR; and we will be renewing a 3-year term for meeting the rigorous standards of ISO-9001 and AS9100. Please go to the quality certification page for a view of the certifications that take effect May 9, 2016 and carries us all the way through to September 14, 2018. GWT thanks NSF-ISR for their diligence and professionalism!