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GB/T 27763-2011 Acoustics—Measurement and parametric description of spatial sound distribution curves in workrooms for evaluation of their acoustical performance (USD) via email in 1-3 business day VALID
GB/T 6882-2016 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Precision methods for anechoic rooms and hemi-anechoic rooms (USD) via email in 1-8 business day VALID
JJG 893-1995 Ultrasonic Source for Doppler Fetel Heart Beat Detector (USD) via email in 1-3 business day ABOLISHED
GB/T 16405-1996 Acoustics—Measurement of insertion loss of ducted silencers without flow—Laboratory survey method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 15952-2010 Electroacoustics - Specifications for personal sound exposure meters (USD) via email in 1-3 business day VALID
JJG (交通) 070-2006 V.R.of Ultrasonic Test instrument of Concrete (USD) via email in 1 business day VALID
GB/T 19889.14-2010 Acoustics—Measurement of sound insulation in buildings and of building elements—Part 14:Guidelines for special situations in the field (USD) via email in 1-5 business day VALID
GB/T 14367-1993 Acoustics-Determination of sound power levels of noise sources-Guide lines for the use of basic STANDARDs and for the preparation of noise test codes via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JJG 1018-2007 Verification Regulation of Standard Hydrophones in the Frequency Range 1 Hz to 2 kHz (USD) via email in 1-3 business day VALID
GB/T 4129-1995 Acoustics--Determination of sound power levels of noise sources--Requirements for the performance and calibration of reference sound source (USD) via email in 1-3 business day ABOLISHED
GB/T 36075.3-2018 Acoustics—Measurement of room acoustic parameters—Part 3: Open plan offices (USD) via email in 1 business day VALID
GB/T 17251-1998 Acoustics--Calibration method of hydrophone acceleration sensitivity via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
JJG 2037-1989 Measuring Instruments for Air Acoustics Pressure (USD) via email in 1-3 business day ABOLISHED
GB/T 3241-2010 Electroacoustics - Octave-band and fractional-octave-band filters (USD) via email in 1-3 business day VALID
GB/T 31004.3-2014 Acoustics—Measurement of sound insulation in buildings and of building elements using sound intensity—Part 3:Laboratory measurements at low frequencies (USD) via email in 1-3 business day VALID
JJG (石油) 10-2000 Verification Regulation of Testing Instrument with Double-Channel Echo (USD) via email in 1-3 business day VALID
JJG 448-1993 Verification Regulation of Ultrasonic Power For Watt Level (USD) via email in 1-3 business day ABOLISHED
GB/T 14369-1993 Acoustics-Measurement method of insertion loss and echo reduction for the underwater acoustical material sample via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JJG 893-2007 Verification Regulation for Ultrasonic Source of Ultrasonic Doppler Foetal Meters (USD) via email in 1-3 business day VALID
JJG 482-2005 Verification Regulation of Laboratory Standard Microphones (Free-field Reciprocity Method) (USD) via email in 1-3 business day ABOLISHED
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