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Position: Search valid to be valid superseded to be superseded abolished to be abolished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/T 14199-1993 General specification for pocket hearing aids 190.0 via email in 1~3 business day abolished
GB/T 20441.4-2006 Measurement microphones—Part 4: Specifications for working standard microphones 140.0 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 3769-2010 Electroacoustics - Scales and sizes for plotting frequency characteristics and polar diagrams 150.0 via email in 1 business day valid
GB/T 20441.2-2018 Electroacoustics—Measurement microphones—Part 2:Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique 490.0 via email in 1~5 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 3785.2-2010 Electroacoustics—Sound level meters—Part 2:Pattern evaluation tests 390.0 via email in 1~5 business day superseded
GB/T 32671.1-2016 Methods for the measurement of zeta potential in colloidal systems - Part 1: Electroacoustical and electrokinetic phenomena 370.0 via email in 1~5 business day valid
GB/T 20441.1-2010 Electroacoustics - Measurement microphones - Part 1: Specifications for laboratory standard microphones 160.0 via email in 1~3 business day valid
GB/T 25102.4-2010 Electroacoustics—Hearing aids—Part 4:Induction loop systems for hearing aid purposes—Magnetic field strength 420.0 via email in 1~3 business day valid
GB/T 3785.3-2018 Electroacoustics—Sound level meters—Part 3:Periodic tests 250.0 via email in 1~3 business day valid
GB/T 3785.1-2010 Electroacoustics—Sound level meters—Part 1:Specifications 420.0 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 160.0 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 370.0 via email in 1~5 business day valid
GB/T 25102.1-2010 Electroacoustics - Hearing aids - Part 1:Hearing aids with induction pick-up coil input 70.0 via email in 1~3 business day valid
GB/T 15173-2010 Electroacoustics—Sound calibrators 930.0 via email in 1~3 business day valid
GB/T 15952-2010 Electroacoustics - Specifications for personal sound exposure meters 320.0 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
YY/T 0458-2003 Technical requirements for ultrasonically blood-mimicking Doppler phantom 280.0 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


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