Physical resources and capabilities1. The Changi Airport Government and SIA had jointly invested in Changi Airport. It includes facilities such as a hangar, a maintenance center and a catering center, these facilities can be used by SIA, but also by customers of other airlines. These services at Changi Airport are therefore not unique to SIA. Airport service is valuable and important for SIA or other airlines. Low unique and high value, then they are not SCA.2. Aircraft: SIA owns 22% of 747-400 aircraft in total production worldwide. These planes offer greater flight range, better fuel efficiency and a quieter cabin than other airlines. Highly unique and valuable, SIA has strong competitive power to attract consumers and lower cost than other airlines. Additionally, if other airlines want to buy more 747-400s, it will require a huge amount of money, which is difficult. Funding: There are two sources of funding for SAI: revenue and shareholder funds. Both are valuable as they are key factors in supporting the operation of the AIS. Two factors attributable to SAI revenue are overall loading and number of passenger seats, and they are not unique as each airline must contain these sales. While SAI Group's shareholder funds were even sufficient to pay for most of its aircraft purchases in the future and in the recent past, shareholder funds had been growing at a rate in excess of S$500 million each year , and the group had no debt. the position is unique to compare with others. However, shareholder funds are not a sustainable competitive advantage, because the fundraising process is not complex, all airlines have this type of funds, and it is easy to tacitize them. Human resourcesSIA has a complete human resources management system which involves the training and motivation of its employees. We can find the SCA of human resources in two aspects: labor cost and training. SIA's labor cost is the lowest among all major airlines, which is not only valuable but also unique in this era. The gap between SIA and other airlines is not easy to bridge in a short time. But if other airlines make great efforts to reduce their human resource costs, they will eventually catch up with SIA because it is not too complex, nor too specific and one can learn from cumulative experience. SIA is just one company that has won the National Training Award consecutively for three years. SIA has spent a lot of money on the employee training program because it believes that people are the essential factor in the company's success..