This study interviewed 16 start-up companies in Hsinchu Science Park area. These start-up companies have a commonality that they all supply or support to established Hsinchu Science Park companies. The purpose of this study is to understand the motivation to setup a company; the major risks faced by any start-up comapnies; the main sources of capital including self-funding, and loans from friends and family members. The major risk of running the business lies in whether the customer relationship is steady and the avoidance of bad debts. The KSFs include scale economy, cost controlling, and after-sale service. Moreover, most of the start-up companies believed that they were pulled by the market opportunities rather than pushed by new technologies.