After-sale service
a. Instruction for Installation and Debugging
Before delivery, TONVA takes responsible for debugging of machine, in order to make sure the provided machine could be safely and smoothly put into operation.
TONVA also take responsibility to have debugging overseas, and Client abroad please sends invitation forward of time to engineer of TONVA, provides the engineer with round-trip tickets, accommodation, vehicle and $ 40per day salary.

b. User Training
Before delivery, TONVA will take responsibility to indoctrinate technical training to the users so that they could understand the machine features and could operate the machine by themselves.

c. Warranty Period
The warranty period for TONVA machine is one year with a life long maintenance. If the user requires special quality guarantee, other stipulated warranty period may be made after mutual agreement.