The warranty rule is applicable to all generating sets supplied by COMBOS.The warranty is only effective under the condition that the generator set is correctly installed, used and maintained, and the malfunction(the malfunction can be repaired by warranty service) is caused by defects ofmaterial or manufacture process. The warranty period is 12 months or accumulatively running one thousand hours, since the shipment date (include the transportation and installation time,or the long time period of being idle). Termination date of the special warranty period is determined by one of the above time limitations which expire first.