Food and Drug Administration and state and local regulatry agencies. If the item you received is damaged or defective, Please message to us immidately.Our guarantee does not cover accidental damage or wear of product caused by customer. Thank you very much for your understanding! You feedback is VERY important to us. We understand the concerns and frustrations you might have, and will try our best to resolve the isuues. Serivce is our #1 priority at BAISTRA! If you message us immediately after placing the order, we will make every effort to assist you with your change request. We offer the best items at the best prices. We strive to exceed all your expectations and put a smile on your face. We stand behind our products and pride ourselves on OUTSTANDING customer service. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical, Lab & Dental Supplies\Orthodontic Brackets, Bands & Buccal Tubes". The seller is "allguest" and is located in this country: CN. This item can be shipped worldwide.