Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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Position: Search valid to be valid superseded to be superseded abolished to be abolished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 11453-1989 Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions $120.00 via email in 1~3 business day abolished
GB 11455-1989 Hearing aid equipment not entirely worn on the listener $45.00 via email in 1~3 business day abolished
GB 3661-1983 Technical specification of measurement condenser microphones $260.00 via email in 1~3 business day valid
GB 3662-1983 Methods for determining electroacoustic characteristics of measurement condenser microphones $130.00 via email in 1~3 business day valid
GB 6832-1986 Methods of measurement on headphones $210.00 via email in 1~3 business day abolished
GB 7614-1987 An artificial ear of wide band type for the calibration of earphones used in audiometry $60.00 via email in 1~3 business day valid
GB/T 10240-1988 Specifications for the editing and production of prog-ramme source for subjective assessment of sound quali-ty of electro-acoustic products $90.00 via email in 1~3 business day valid
GB/T 11452-1989 Guide to hearing aid standards $240.00 via email in 1~3 business day abolished
GB/T 11454-1989 Magnetic field strength in audio-frequency induction loops for hearing aid purposes $180.00 via email in 1~3 business day abolished
SJ 1040-1976 Low noise travelling wave tubes, Type B-1 via email in business day abolished
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