J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
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Chemsky(shanghai)International Co.,Ltd.
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Shanghai Benso Pharmaceutical Technology Co., Ltd.
Telephone 15088289376
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Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226 +86-13028896684;
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Shanghai Sunmonth Technology Co., LTD
Telephone 15216675652
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