Recently, Dr. Zhang Wu, Chairman of Air Guard Purification Technology Group, successfully passed the ISO (International Organization for Standardization) International Standard Registered Expert review, leveraging his profound professional expertise and extensive practical experience in standardization. He has officially become a member of both ISO/TC 146/SC 6/WG 13 (Air Quality / Indoor Air) and the ISO/TC146/SC6 – ISO/TC22 Joint Working Group, participating in the development of international standards such as those for the determination of volatile organic compounds in automotive interiors. This achievement signifies international recognition of Air Guard’s technical strength and industry influence.