... 1 year warranty, except for human factors.2.If the item is defective use by technical reason,you could sent back ... .In order to qualify for a refund or exchange of goods.4.In three months since you ... . Shipment 1.Items are only shipped after payment is received.2.We provide EMS,DHL,UPS,TNT,and ... In advance : If the amount is less than 9000$,you should pay in advance; If the amout is reach 9000$, you ...