Table 7.8 MAIN FACTORS CONTRIBUTING TO SAMPLE VENDORS' GROWTH (%) Formal Informal Increased orders from same principal 100.0 100.0 Increased orders from different principals 45.5 50.0 Increased market demand for autoparts 50.0 50.0 Development of new parts 86.4 100.0 Help by principals in development of new parts (Technical Support and Quality assurance ) 54.5 41.7 Source Estimated from Survey Data. * Multiple responses were listed by respondents. The major factors impeding growth were largely the same for both formal and informal vendors, namely, planned and unplanned power outages, the level of customs duties and sales taxon imported materials and components, and the law and order situation. In addition, formal vendors identified the import of secondhand cars as an impeding factor while informal vendors highlighted the underinvoicing or smuggling of parts, especially from China.