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GB/T 16296.3-2017 Acoustics—Audiometric test methods—Part 3:Speech audiometry 540 (USD) via email in 1-5 business day VALID
GB/T 21230-2014 Acoustics—Determination of occupational noise exposure—Engineering method 600 (USD) via email in 1-5 business day VALID
GB/T 16538-1996 Acoustics-Determination of sound power levels of noise sources using sound pressure-Survey method using a reference sound source via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 31013-2014 Acoustics—Acoustic insulation for pipes,valves and flanges 540 (USD) via email in 1-5 business day VALID
JJG 868-1994 Verification Regulation of Standard ultrasonic sources for Milliwattlevel 90 (USD) via email in 1 business day VALID
GB/T 4129-2003 Acoustics--Requirements for the performance and calibration o reference sound sources used for determination of sound power levels via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
JJG 869-2002 Verification Regulation of Electro-acoustical Measurement Instruments for Telephone Set 465 (USD) via email in 1-5 business day VALID
JJG 746-1991 for Ultrasonic Inspection Instruments 120 (USD) via email in 1-3 business day ABOLISHED
JJG (铁道) 130-1992 195 (USD) via email in 1-3 business day ABOLISHED
JJG (轻工) 100-1993 via email in VALID please email coc@codeofchina.com for quotation
JJG (电子) 15004-1988 XFC-2 Type Standard Signal Generator (Trial Implementation) 135 (USD) via email in 1 business day VALID
JJF 1223-2009 Calibration Specification for Standing Wave Tubes(Method Using Standing Wave Ratio) 300 (USD) via email in 1-3 business day VALID
GB/T 3767-2016 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Engineering methods for an essentially free field over a reflecting plane 1080 (USD) via email in 1-8 business day VALID
GB/T 21232-2007 Acoustics - Guidelines for noise control in offices and workrooms by means of acoustical screens 300 (USD) via email in 1-3 business day VALID
JJG 482-1987 Standard Condenser Microphones (Free-Field Reciprocity Method) 165 (USD) via email in 1-3 business day ABOLISHED
JJF 1142-2006 Calibration Specification for Building Acoustic 240 (USD) via email in 1-3 business day VALID
GB/T 19889.7-2005 Acoustics—Measurement of sound insulation in buildings and of building elements—Part 7:Field measurements of impact sound insulation of floors via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
JJF 1228-2009 Calibration Specification for Sound Power Meters 420 (USD) via email in 1-3 business day VALID
JJF 1137-2005 Calibration Specification for Microphone Preamplifiers 225 (USD) via email in 1-3 business day VALID
JJG (轻工) 101-1993 via email in VALID please email coc@codeofchina.com for quotation
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