Purchase Qty. Reference FOB Price
100-149 kg US$10.00
150-199 kg US$15.00
200-299 kg US$20.00
300-399 kg US$25.00
400+ kg US$30.00
Product Description
Vitamin B12,, is a polycyclic compound containing 3-valent cobalt, and 4 reduced pyrrole rings are connected together to form 1 macroring (similar to porphyrin), which is the only vitamin containing metallic elements. Vitamin B12 is a red crystalline powder, odorless and tasteless, soluble in ...