Warranty &Maintenance:  We provide

1 month warranty for all used pcb circuits if arrive not work

2 Exchange Only if arrive board damaged when it returned

3 We will refund you for items returned within 7 days of you receiving them broken to pieces, for any reason. A full refund will be given if items are returned in their original condition. ReturnMerchandise which is damaged or missing components is not refundable.

4 Buyers are responsible for return shipping with proper packaging. On receiving items, we will refund you immediately.

5 We Do not responsible for misdiagnosed projects(purchase order doesnot matching your bad parts)