Nneɛma a wɔde yɛ nhwehwɛmu wɔ aduruyɛdan mu a wɔtɔn ne nea wɔde ma a wɔde yɛ kua ne aduan a wɔyɛ, aburow a wɔyɛ, efi nea wɔboaboa ano ne nea wɔhyehyɛ so kosi aburow ne aduan mu nhwehwɛmu so. Nnwinnade a edi mũ ma aburow ne aduan ho nhwehwɛmubea ahorow a ɛwɔ warranty ne post-warranty service.