User friendly ordering system and fast delivery. Delivery charges were revised and increased significantly by almost 3 times after order had been placed but CS responded to my questions raised very promptly. I live in HK and my payment was made by visacrd but was asked to do bank transfer for the unexpected additional delivery charges. Fortunately, I have a friend who lived in UK, otherwise I would be forced to cancel the order. Upon shipment arrival, one of the 20 boxes of Unodent masks was opened up at the bottom and those masks were not individual wrapped hence exposed. However, we felt lucky to have received the masks in 3 days which was extremely impressive. Thanks.