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China supplier Aikafu High Quality Pure Pharmaceutical Food Grade Methylcobalamin vitamin B12 powder
US $1-900 / Kilogram
1 Kilogram (Min. Order)
Hangzhou Aikafu Biological Technology Co., Ltd.
Good Manufacturer Cyanocobalamin /Vitamin B12 68-19-9 From Leader Biochemical Group On Sales!!!!!!!!!!!!!! !!!
US $1-5 / Gram
1 Gram (Min. Order)
Xi'an Leader Biological Chemical Engineering Co., Ltd.