2026-1-28 216.73.216.141
Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
Position: Search valid to be valid superseded to be superseded abolished to be abolished
Standard No. Title Price(USD) Delivery Status Add to Cart
GB 9044.2-1988 Measurements for the rural subscriber loop carrier equipment 150.0 via email in 1~3 business day valid,,1988-10-1
GB 9044.1-1988 Specifications for the rural subscriber loop carrier equipment 75.0 via email in 1~3 business day valid,,1988-10-1
DB13/T 5120-2019 via email in business day abolished2025-10-08,,2019-12-28
GB/T 21548-2021 Methods of measurement of the high speed semiconductor lasers directly modulated for optical fiber communication systems 225.0 via email in 1~3 business day valid,,2021-8-1
GB/T 6555-1986 Requirements for 3-channel carrier telephone equipment on an open-wire pair 180.0 via email in 1~3 business day valid,,1987-7-1
YD/T 527-1992 Specification for 12-channel transistorized carrier telephone equipment on an agricultural wire 130.0 via email in 1~3 business day valid,,1992-11-1
GB/T 13429-1992 Measurement methods for 120-channel submarine coaxial cable carrier telephone equipment 330.0 via email in 1~3 business day abolished2017-12-15,,1992-1-2
GB/T 13425-1992 Measurement for 24-channels submarine coaxial cable carrier telephone equipment 660.0 via email in 1~3 business day abolished2017-12-15,,1992-1-2
GB/T 21548-2008 Methods of measurement of the high speed semiconductor lasers directly modulated for optical fiber communication systems 370.0 via email in 1~5 business day superseded,2021-8-1,2008-11-1
GB/T 13038-1991 Products packaging of carrier telephone equipment 250.0 via email in 1~3 business day abolished2005-10-14,,1992-4-1
YDJ 5-1985 Specification for Installation Design of Long-Distance Communications Carrier Telephone Equipment 810.0 via email in 1~3 business day valid,,1986-6-1
GB 7435-1987 Sealing tests for pressurized waveguide components and assemblies 184.0 via email in 1~3 business day superseded,1900-1-1,1987-11-1
GB/T 5445-1985 Specification for HF 12-channel transistorized carrier telephone equipment on an open-wire pair 410.0 via email in 1~3 business day valid,,1986-6-1
GB/T 33768-2017 Rfeliability test method for optoelectronic devices used in telecommunications 550.0 via email in 1~5 business day valid,,2017-12-1
YD/T 689-1994 Quality grading criteria of rural and urban local subscriber loop carrier equipment 150.0 via email in 1~3 business day abolished2009-12-01 ,,1994-5-18
GB/T 7329-2008 Coupling devices for power line carrier systems 180.0 via email in 1~3 business day valid,,2008-10-1
YD/T 1468-2006 Technical Requirements of IPSec Traverse NAT 330.0 via email in 1~3 business day valid,,2006-10-1
YD/T 1470-2006 Technical Requirements of Telephony Routing over IP (TRIP) 510.0 via email in 1~3 business day valid,,2006-10-1
GB/T 13431-1992 Performance requirements for 120 - channel submarine coaxial cable carrier telephone equipment 150.0 via email in 1~3 business day abolished2017-12-15,,1992-1-2
GB/T 5446-1985 Specification for 12-channel transistorized carrier telephone equipment on an open-wire pair 260.0 via email in 1~3 business day valid,,1986-6-1
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GB 9044.2-1988 Measurements for the rural subscriber loop carrier equipment 
  Issued on: 1987-12-07   Price(USD): 150.0
GB 9044.1-1988 Specifications for the rural subscriber loop carrier equipment 
  Issued on: 1987-12-07   Price(USD): 75.0
DB13/T 5120-2019  
  Issued on: 2019-11-28   Price(USD):
GB/T 21548-2021 Methods of measurement of the high speed semiconductor lasers directly modulated for optical fiber communication systems 
  Issued on: 2021-04-30   Price(USD): 225.0
GB/T 6555-1986 Requirements for 3-channel carrier telephone equipment on an open-wire pair 
  Issued on: 1986-09-02   Price(USD): 180.0
YD/T 527-1992 Specification for 12-channel transistorized carrier telephone equipment on an agricultural wire 
  Issued on:   Price(USD): 130.0
GB/T 13429-1992 Measurement methods for 120-channel submarine coaxial cable carrier telephone equipment 
  Issued on: 1992-3-10   Price(USD): 330.0
GB/T 13425-1992 Measurement for 24-channels submarine coaxial cable carrier telephone equipment 
  Issued on: 1992-3-10   Price(USD): 660.0
GB/T 21548-2008 Methods of measurement of the high speed semiconductor lasers directly modulated for optical fiber communication systems 
  Issued on: 2008-03-31   Price(USD): 370.0
GB/T 13038-1991 Products packaging of carrier telephone equipment 
  Issued on: 1991-06-26   Price(USD): 250.0
YDJ 5-1985 Specification for Installation Design of Long-Distance Communications Carrier Telephone Equipment 
  Issued on: 1986-6-1   Price(USD): 810.0
GB 7435-1987 Sealing tests for pressurized waveguide components and assemblies 
  Issued on:   Price(USD): 184.0
GB/T 5445-1985 Specification for HF 12-channel transistorized carrier telephone equipment on an open-wire pair 
  Issued on: 1985-10-17   Price(USD): 410.0
GB/T 33768-2017 Rfeliability test method for optoelectronic devices used in telecommunications 
  Issued on: 2017-05-31   Price(USD): 550.0
YD/T 689-1994 Quality grading criteria of rural and urban local subscriber loop carrier equipment 
  Issued on: 1994-05-18   Price(USD): 150.0
GB/T 7329-2008 Coupling devices for power line carrier systems 
  Issued on: 2008-03-25   Price(USD): 180.0
YD/T 1468-2006 Technical Requirements of IPSec Traverse NAT 
  Issued on: 2006-6-8   Price(USD): 330.0
YD/T 1470-2006 Technical Requirements of Telephony Routing over IP (TRIP) 
  Issued on: 2006-6-8   Price(USD): 510.0
GB/T 13431-1992 Performance requirements for 120 - channel submarine coaxial cable carrier telephone equipment 
  Issued on: 1992-3-10   Price(USD): 150.0
GB/T 5446-1985 Specification for 12-channel transistorized carrier telephone equipment on an open-wire pair 
  Issued on: 1985-10-17   Price(USD): 260.0
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