861 The ISO TC/229 Technical Committee meeting was held from the 20th to the 24th of April this year, both in-person and virtually, consisting of 5 working groups. Iranian representatives participated actively in virtual sessions of working groups 3 (Health, Safety, and Environment) and 4 (Nanomaterials Characteristics). During these meetings, approved standards are discussed, new standard topics are approved, and the expert opinions of member countries are considered for ongoing standards development.
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