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VALID TO BE VALID SUPERSEDED TO BE SUPERSEDED ABOLISHED TO BE ABOLISHED

Standard No. Title Price(USD) Delivery Status Add To Cart GB 7614-1987 An artificial ear of wide band type for the calibration of earphones used in audiometry 75 (USD) via email in 1-3 business day ABOLISHED Add To Cart YD/T 836-1996 120 (USD) via email in 1-3 business day Add To Cart

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