Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 3785.1-2010 Electroacoustics—Sound level meters—Part 1:Specifications 435.0 via email in 1~3 business day valid
GB/T 14199-1993 General specification for pocket hearing aids 490.0 via email in 1~3 business day abolished
GB/T 25102.6-2017 Electroacoustics-Hearing aids-Part 6:Characteristics of electrical input circuits for hearing aids 105.0 via email in 1~3 business day valid
GB/T 25102.2-2010 Electroacoustics—Hearing aids—Part 2:Hearing aids with automatic gain control circuits 330.0 via email in 1~3 business day valid
GB/T 20441.6-2017 Electroacoustics-Measurement microphones-Part 6:Electrostatic actuators for determination of frequency response 375.0 via email in 1~5 business day valid
GB/T 15261-2008 Measurement methods for acoustic properties of ultrasonically tissue-mimicking materials 210.0 via email in 1~3 business day valid
GB/T 25102.100-2010 Electroacoustics—Hearing aids—Part 0:Measurement of electroacoustical characteriistics 300.0 via email in 1~3 business day valid
GB/T 25498.5-2017 Electroacoustics--Simulators of human head and ear--Part 5: 2 cm3 coupler for the measurement of hearingaids and earphones coupled to the ear by means of ear inserts 160.0 via email in 1~3 business day valid
GB/T 15173-2010 Electroacoustics—Sound calibrators 910.0 via email in 1~3 business day valid
YY/T 0458-2003 Technical requirements for ultrasonically blood-mimicking Doppler phantom 285.0 via email in 1~3 business day superseded
GB/T 3241-2010 Electroacoustics - Octave-band and fractional-octave-band filters 390.0 via email in 1~3 business day valid
GB/T 14199-2010 Electroacoustics—General specification for hearing aids 210.0 via email in 1~3 business day valid
YY/T 0642-2014 Ultrasonics―Field characterization―Test methods for the determination of thermal and mechanical indices related to medical diagnostic ultrasonic fields 690.0 via email in 1~8 business day valid
GB/T 15952-2010 Electroacoustics - Specifications for personal sound exposure meters 335.0 via email in 1~3 business day valid
GB/T 25102.7-2017 Electroacoustics--Hearing aids--Part 7: Measurement of the performance characteristics of hearing aids for production, supply and delivery quality assurance purposes 260.0 via email in 1~3 business day valid
GB/T 25102.8-2017 Electroacoustics-Hearing aids-Part 8:Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions 375.0 via email in 1~5 business day valid
GB/T 20441.1-2010 Electroacoustics - Measurement microphones - Part 1: Specifications for laboratory standard microphones 170.0 via email in 1~3 business day valid
GB/T 25498.3-2010 Electroacoustics - Simulators of human head and ear - Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry 170.0 via email in 1~3 business day valid
GB/T 32671.1-2016 Methods for the measurement of zeta potential in colloidal systems - Part 1: Electroacoustical and electrokinetic phenomena 375.0 via email in 1~5 business day valid
YY/T 0458-2014 Technical requirements for ultrasonically blood-mimicking Doppler phantom 315.0 via email in 1~5 business day valid
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