<prompt> Translate the following text to SwahiliCommercial companies demand knowledge from virtual or engineering prototypes, 90 percent of required engineering drawings for the product supported by test results, demonstration that the product meets customer requirements, a series of disciplined design reviews, and stakeholder agreement that the design is stable and ready for product demonstration before a commitment is made to move forward and invest in product demonstration.  <response>: Kampuni za kibiashara zinahitaji maarifa kutoka kwa prototypes halisi au uhandisi, asilimia 90 ya michoro ya uhandisi inayohitajika kwa bidhaa iliyoungwa mkono na matokeo ya majaribio, kuonyesha kwamba bidhaa inakidhi mahitaji ya wateja, mfululizo wa ukaguzi wa muundo wa mtiririko, na makubaliano ya wadau kwamba muundo ni thabiti na tayari kwa maonyesho ya bidhaa kabla ya kujitolea kwenda mbele na kuwekeza katika maonyesho ya bidhaa. 