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ZENGHUA BIO-TECH CO., LTD??? ?? ??? ?????.
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ZENGHUA BIO-TECH CO., LTD
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13355815889
???:
lxl118@yeah.net
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China
URL:
www.is0513.com/ShowSupplierProductsList10046/0.htm
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1
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Thymine
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65-71-4
C5H6N2O2
1
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