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GB/T 14199-1993 General specification for pocket hearing aids via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
YY/T 0751-2009 Ultrasonics—Dental descaler systems—Measurement and declaration of the output characteristics (USD) via email in 1-3 business day VALID
GB/T 3785.3-2018 Electroacoustics—Sound level meters—Part 3:Periodic tests (USD) via email in 1-3 business day VALID
GB/T 25498.1-2010 Electroacoustics - Simulators of human head and ear - Part 1: Ear simulator for the calibration of supra-aural earphones (USD) via email in 1-3 business day VALID
YY/T 0643-2008 Methods of measuring the performance of ultrasonic pulse-echo diagnostic equipment via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 20441.2-2018 Electroacoustics—Measurement microphones—Part 2:Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique (USD) via email in 1-5 business day VALID
GB/T 25102.6-2017 Electroacoustics—Hearing aids—Part 6:Characteristics of electrical input circuits for hearing aids (USD) via email in 1-3 business day VALID
GB/T 25102.100-2010 Electroacoustics—Hearing aids—Part 0:Measurement of electroacoustical characteriistics (USD) via email in 1-3 business day VALID
GB/T 20441.1-2010 Electroacoustics - Measurement microphones - Part 1: Specifications for laboratory standard microphones (USD) via email in 1-3 business day VALID
YY/T 0458-2014 Technical requirements for ultrasonically blood-mimicking Doppler phantom (USD) via email in 1-3 business day VALID
GB/T 32671.1-2016 (USD) 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 (USD) via email in 1-8 business day VALID
GB/T 25102.1-2010 Electroacoustics—Hearing aids—Part 1:Hearing aids with induction pick-up coil input (USD) via email in 1-3 business day VALID
GB/T 14199-2010 Electroacoustics—General specification for hearing aids (USD) via email in 1-3 business day VALID
GB/T 15952-2010 Electroacoustics - Specifications for personal sound exposure meters (USD) via email in 1-3 business day VALID
GB/T 3241-2010 Electroacoustics - Octave-band and fractional-octave-band filters (USD) via email in 1-3 business day VALID
YY/T 0458-2003 Technical requirements for ultrasonically blood-mimicking Doppler phantom (USD) via email in 1-3 business day ABOLISHED
YY/T 0937-2014 Technical requirments for ultrasonically tissue-mimicking phantom (USD) via email in 1-3 business day VALID
GB 9706.237-2020 Medical electrical equipment—Part 2-37:Particular requirements for the basic safety and essential performance of ultrasonic medical diagnostic and monitoring equipment (USD) via email in 1-5 business day TO BE VALID
GB/T 20441.3-2010 Electroacoustics - Measurement microphone - Part 3: Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique (USD) via email in 1-3 business day VALID
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