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    国产亚洲日韩在线三区
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           4,4’-Diaminostilbene-2,2’-disulf..
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    Luoyang Dongyuan Chemical Co.,Ltd.
    Address: DONGDAJIAO IND.ZONE DIANZHUANG TOWN YIBIN DISTRICT LUOYANG, HENAN
    Tel: +86-379-67435819 64152217
    Fax: +86-379-67436819 64152219
    Postal code: 471942 
    Website: http://www.440479.com
    E-mail: dy@dongyuanchem.com;