This part of GB/T 7672 specifies the requirements for copper flat wires wrapped in glass fiber impregnated and film wrapped. Copper flat wire wrapped in glass fiber impregnated and sintered in film is not included in the scope of this standard. - Wide side size: min. 2.00mm, max. 16.00mm; - Narrow side size: min. 0.80mm, max. 5.60mm. See GB/T 7672.1-2008 for the combination and ratio of wide side size and narrow side size.