OTHER
ISO 561:1989
ISO 561:1989 is an International Standard that specifies graphical symbols for diagrams related to coal preparation plants. It defines symbols to be used in flowsheets and other diagrams for coal preparation processes, as described in the standard.
📄 Document
Title: APPLICATION FORM OF ISO 561:1989
📜 Document Instructions:
Please fill the application form and upload required documents online for ISO Certification.
