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What is Buyer Protection?

All orders placed on our website are protected by a standard set of guarantees, also known as Buyer Protection. 

Buyer protection starts from the moment you have paid for your order. If you go to My Orders, the Buyer Protection period will be displayed in the form of a countdown clock. Once you have confirmed receiving your order, you will have 15 days to apply for a refund. 

Terms & Conditions

Your purchase is protected if:

- The item was purchased on our platform.
- The item you received was damaged, defective, or substantially different from the item represented on the product detail page.
- Your order did not arrive not due to factors related to the buyer (for example: the wrong shipping address was provided).
- You raise a claim by opening a dispute.
- Your account is in good standing.
- Your item is returned to the seller due to customs duties (customs clearance/taxes are not included).



We promise your money back if the item you received is not as described, or if your item is not delivered within the Buyer Protection period. You can get the refund in 15 days after the claim process finishes.

1.Contact Seller

Go to your order history and select the item. Discuss the issue with the seller and see possible solutions.


2. Apply for Refund

If you can't come to an agreement with the seller, simply apply for a refund by opening a dispute in the order page. Be sure to do this within 15 days of your order confirmation.


3. Get Money Back in 15 Days

Most sellers will return your money in 15 days.




Transaction Service Agreement

If you have any questions regarding our Privacy Policy or if you wish to access or correct your Personal Data, you may send your request in writing to the following address:info@cncartridge.com

1.Why does my order come without the One-year warranty service?
We are trying to coordinate with the sellers and service providers to provide better protection for all cross-border transactions on O-SOS.com

2.When can I apply for the One-year warranty service?
If you have purchased or been provided with the One-year commercial warranty service, you may apply for the commercial warranty service within one year after the waiting period, which is 15 days after your order with the One-year warranty service is completed.

3.Why was my One-year warranty service application rejected?
Please pay attention to the warranty terms and conditions in the contract between you and the service provider or seller.

4.What can I do if my device is found faulty or broken during the 15-day waiting period?
If you have any problems with your device during the 15-day waiting period, please discuss with the seller; if that doesn’t help, you can open a dispute for further assistance. Please make sure you do this before your Buyer Protection period has ended.