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ammonium bromide
NH4Br
as your using
pass over
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JINAN CHANGQING SIGMA CHEMICAL CO,.LTD
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86-531-7906399
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86-531-7906499
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www.sigmajn.com
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naumay@hotmail.com
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NO.6 SAN LI ZHUANG LIXIA DISTRIT ,JINAN,CHINA
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