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Standard No. Title Price(USD) Delivery Status Add To Cart
GB/T 7554-1987 Protected 5-unit numerical code for telegram service (USD) via email in 1-3 business day VALID
GB/T 13621-1999 Capacity series and radio-frequency channel arrangement and equipment main technical specifications for 100~1 000MHz radio relay communication systems via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YD/T 1811-2008 Technical Requirements and Testing Method of Retiming Equipment Based on 2048kbit/s (USD) via email in 1-3 business day VALID
YD/T 1259-2003 Technical specification for optical safe procedure for Wavelength Division Multiplexing (WDM)system (USD) via email in 1-3 business day VALID
YD/T 1991-2009 Technical requirements for N×40Gbit/s optical wavelength division multiplexing (WDM) systems via email in ABOLISHED please email coc@codeofchina.com for quotation
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