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GB/T 14366-1993 Acoustics-Determination of occupational noise exposure and estimation of noise-induced hearing impairment via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JJG 639-1998 Verification Regulation of Ultrasonic Source for Medical Ultrasonic Diagnostic Equipment (USD) via email in 1-3 business day VALID
GB/T 25078.1-2010 Acoustics—Recommended practice for the design of low-noise machinery and equipment—Part 1:Planning (USD) via email in 1-5 business day VALID
JJG 778-2005 Noise Level Statistical Analyzers (USD) via email in 1-3 business day ABOLISHED
JJG 277-1998 Verification Regulation of Reference Sound Source (USD) via email in 1-3 business day ABOLISHED
JJG 798-1992 Standard Artificial Mastoids (USD) via email in 1-3 business day ABOLISHED
GB/T 36075.2-2018 Acoustics—Measurement of room acoustic parameters—Part 2: Reverberation time in ordinary rooms (USD) via email in 1 business day VALID
GB/T 17252-1998 Acoustics-Characteristics and measurements of ultrasonic piezoelectric transducers up to 100 kHz via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
JJG 176-1995 Verification Regulation of Sound Calibrators (USD) via email in 1-3 business day ABOLISHED
JJG 176-2005 Verification Regulation of Sound Calibrators (USD) via email in 1-3 business day VALID
JJG 992-2004 Verification Regulation of the Measurement Instruments of Sound Intensity (USD) via email in 1-3 business day VALID
GB/T 21230-2007 Acoustics - Guidelines for the measurement and assessment of exposure to noise in a working environment (USD) via email in 1-3 business day ABOLISHED
JJG 340-1999 Verification Regulation of Measuring Hydrophone in the Frequency Range 1Hz to 1000Hz (USD) via email in 1-3 business day ABOLISHED
JJG 921-1996 Verification Regulation of Noise --Vibration meter For measuring Envrionmental pollution (USD) via email in 1-3 business day VALID
GB/T 19889.4-2005 Acoustics. Measurements of sound insulation in buildings and of building elements. Part 4: Field measurements of airborne sound insulation between rooms (USD) via email in 1 business day VALID
GB/T 16406-1996 Acoustics-Flexural resonance testing method for damping properties of acoustical materials via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 4128-1995 Acoustics-STANDARD hydrophone via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
JJG (机械) 97-1992 (USD) via email in 1-3 business day VALID
GB/T 14367-2006 Acoustics―Determination of sound power levels of noise sources―Guidelines for the use of basic standards via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 17248.3-2018 Acoustics—Noise emitted by machinery and equipment—Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections (USD) via email in 1-5 business day VALID
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