I came across a 2019 press release by Global GreenTag advising that the Global GreenTag PhD, Materials Transparency Certification Program is as of 2019 recognised by LEED and USGBC. Please can someone clarify if GreenTag PhD is an acceptable standard in lieu of Green Seal or UL Ecolabel standards. This question is raised as Global GreenTag are not listed as a member of the Global Ecolabelling Network on the GEN website.