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Qingdao Kangyexin Medicinal Silica Gel Co.,Ltd.??? ?? ??? ?????.
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Qingdao Kangyexin Medicinal Silica Gel Co.,Ltd.
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-86-532-86465999
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CHINA
URL:
https://kangyexin.com/
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H2O3Si
SiO2·nH2O
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O2Si
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