for shipping fee (1). To Brazil buyers, Need to offer us CNPJ or CPF if ship the goods by DHL/FEDEX/EMS. (2). To Russia buyers, The goods only can be shipped by EMS , The buyer need to offer full name of receiver! (3). The Duty or custom fees is depend on BUYER country, Not Seller! If need declare low value when shipping , Please advise us in time ! (4). To remote areas buyers , If ship the order by FEDEX/DHL , Need to add extra fee USD30.00 , Hope buyer can understand us. (1). We accept replacement or exchange within 30days. (2). Please keep the goods in the same condition we offered when the buyer return the goods to us . (3). We will resent the goods to buyer in time if happen that goods broken or doen't work. (1). Your satisfaction is most important for us. After you received the item and satisfied with our product, Could you leave us positive feedback? Thank you! (2). Please don't leave any negative feedback to us, If there is any questions , You can contact us in time , We will try our best to solve the problems until you satisfied.