(1).How is the quality?
The qualities of most products are above 99% purity, same are 99.7% purity.
(2).How is the package?
Aluminum foil bag or as customer's required.
(3).How is the storage?
Keep in dry and cool place.
(4).Do I need to pay extra for shipping cost?
No, our price includes the shipping cost already; you need not pay for any tax and others.
5.Can I order sample to test?
Yes, you are welcome to order sample before placing bulk order. We will send the sample directly to your door by courier.