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 Payment Methods

1. Credit card
We support a variety of credit card payments (VISA, MasterCard, Discover, American Express and so on.), and whether you have a Paypal account or not, you can still choose the credit card payment function provided by PayPal.

2. PayPal
The most popular payment method in the world. We are The Premier Paypal user and verified user. Please ensure that you have sufficient funds in your Paypal account to prevent any delay in processing your order.


1. Please refer to sino-sci official email for the payment order. When you receive the email confirming payment, it means that you have completed the order transaction.

2. The transaction may be delayed, and it will usually be settled after the order confirmation is completed (i.e. after receiving the order confirmation email) and will appear on your bill.

3. Please confirm that the payment information is consistent with the cardholder's bank account information. If the payment fails, please contact the issuing bank for details.

PS: If you have completed your payment, you will not be able to view this order in your Sino-sci account (or have not received an order confirmation email). And the bank account record shows "Pending" or "Processing" status, which means that the debit has been temporarily frozen by the bank. Please wait 3-4 business days, the bank will automatically cancel the debit record;

If your bank account record shows a "paid" status, please contact Customer Service for assistance (providing a screenshot of your bank account payment number and debit record).

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