INTERNATIONAL ELECTROTECHNICAL COMMISSION <br/><br/>
IEC: 60674-3-2-1992;Specification for plastic films for electrical purposes Part 3; Specifications for individual materials Sheet 2;Requirements for balanced biaxially oriented polyethylene terephthalate (PET) films used for electrical insulation 

 - Ed.1 
 - GENEVA  IEC  1992 
 - 21. 
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