Q: How is the quality?
A: The qualities of most products are above 99% purity, same are 99.7% purity. 2.Q:How is the package?
A:Aluminum foil bag or as customer's required.
Q:How is the storage?
A:Keep in dry and cool place.
4.Q:Do I need to pay extra for shipping cost?
A:No, our price includes the shipping cost already; you need not pay for any tax or others.
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