Hi Wareerat,
Good day to you. This is Eunice and I will be handling all the RMA units. There are some guidelines to how we handle our RMA.
I have done it for you as seen in the attached.
1) Attached is a sample of RMA defective excel form. Kindly indicate (Serial Number, Model, Colour and Fault)
2) Attached is also a warranty guideline and preparation of shipping back the faulty units.
3) Kindly keep those Charging cable, for your local use. (Do Not Need to ship back the Cables)
4) Use our FedEx account to send it over to us and put it as “International Economy” shipment.
5) LRTSG FedEx account no. 532593786