If any item you purchased fails and it is more than 28 calendar days from the date of receipt, you are entitled to warranty repairs as long as your item is within the warranty period. In some cases, for your convenience, the manufacturer will provide professional and comprehensive on-site service and/or telephone help facilities, Ebuyer recommends that you use these facilities to quickly correct the fault. For commercial customers, all warranty repairs after 28 days of receipt will be submitted directly to the manufacturer.