OTHER
ISO 21575:2018
ISO 21575:2018 is a standard that specifies a powder test method for assessing the water resistance of optical glass. It is a joint standard by the British Standard and the International Organization for Standardization (ISO).
📄 Document
Title: APPLICATION FORM OF ISO 21575:2018
📜 Document Instructions:
Please fill the application form and upload required documents online for ISO Certification.
