Pre-sales: If you have good quantity, print your logo for free; make your own color box and manual; OEM (do your special products according to your drawing).
After-sales: one-year guarantee. 2% easily-worn spare parts will be provided you for free like hand dryers. All the products you could not repaired could be delivered to us using freight collect way by surface mail (cheaper one) together, they will be returned to you in next order by sea.
After one year, you should pay a little for the parts and repairing.