There would only be one possible improvement that I could see & this is regarding delivery times. I live in the UK, when I ordered there was no information on delivery times, when I was given my tracking number it was for the USPS, this was fine until the parcel arrived at HEATHROW AIRPORT. After this point I was unable to track the parcel & wasn't informed that the parcel would take up to 7 days th clear customs before travelling on to final destination. After numerous emails from myself I was finally informed of this process but wasn't informed in advance. Once the parcel departed HEATHROW AIRPORT I was not able to track the parcel through ROYAL MAIL as there was no tracking ID forwarded to myself from neither ZEMNED, USPS OR ROYAL MAIL, subsequently I was not at home to receive the delivery & had to take a day off work the next day so I could accept the delivery. In future if this could be rectified it would make a big difference to continued orders with ZENMED. My wife is very happy with the actual products & it would be a shame if we were to look else were for similar products due this issue.