## 4 Results and Discussion
### Discussion of the Results
Fourth, the impact of a 10% price increase in the NG supply sector on the national price level in South Korea and Japan is 0.10297% and 0.03634%, respectively, the former being 2.8 times the latter. This means that the impact of changes in NG prices on national prices is greater in South Korea than that in Japan. Therefore, the stabilization of the NG supply price is important in South Korea. The South Korean government needs to design policies and action plans to predict and prepare for future changes in NG prices and their ripple effects on the national economy. Finally, sectors in which investment or production in the NG supply sector in South Korea and Japan have substantial effects are explored. Overall, the production-inducing effect, value-added creation effect, and employment-inducing effect of one unit investment in South Korea's NG supply sector are large in the \"2. Mined and quarried goods\", \"23. Finance and insurance\", and \"26. Business support services\" sectors. On the other hand, for Japan, the effects were large in the \"2. Mined and quarried goods\", \"6. Petroleum and coal products\" and \"20. Transportation\" sectors. It is very difficult to pinpoint the reason for this difference between the two countries, but the reason seems to be due to the difference in the NG supply structure between the two countries. About 78% of South \begin{table}
\begin{tabular}{l c c} \hline \hline  & **South Korea** & **Japan** \\ \hline Production-inducing effects & & \\ Effects on other sectors & 0.07979 & 0.86142 \\ Self-induced effect & 1.00000 & 1.00000 \\ Total & 1.07979 & 1.86142 \\ Value-added creation effects & & \\ Effects on other sectors & 0.03668 & 0.20548 \\ Self-induced effect & 0.16578 & 0.31443 \\ Total & 0.20246 & 0.51990 \\ Wage-inducing effects & & \\ Effects on other sectors & 0.01641 & 0.00603 \\ Self-induced effect & 0.03033 & 0.01305 \\ Total & 0.04674 & 0.01908 \\ Employment-inducing effects a  & & \\ Effects on other sectors & 343.45119 & 624.05294 \\ Self-induced effect & 459.93194 & 1350.56913 \\ Total & 803.38313 & 1974.62207 \\ \hline \hline \end{tabular}
\end{table} 
Table 9: Summary of the economic effects of natural gas supply sectors in Korea and Japan. Korea's NG supply sector is occupied by one public corporation, KOGAS. KOGAS is known as the world's largest LNG importer. The South Korean government has strong control over KOGAS, and the Board of Audit and Inspection is also strengthening its audit of KOGAS. Therefore, KOGAS borrows heavily from financial institutions, subscribes to various forms of insurance, and is quite dependent on business services such as legal and consulting. On the other hand, Japan has a relatively low dependence on these sectors as NG supply is operated in a liberalized competitive market. In addition, liquefied petroleum gas, a type of petroleum product, is mixed with NG and supplied as city gas, and NG is transported by vehicle to areas without NG piping networks, which seems to have a significant impact on related sectors. In South Korea, the supply shortage effect and price-inducing effect of the NG supply sector were large in the \"9. Basic metal products\" and \"16. Electricity and steam supply\" sectors. On the other hand, in Japan, the supply shortage effect and price-inducing effect of the NG supply sector were high in the \"14. Transport equipment, manufacturing services, and repair services of industrial equipment\" and \"21. Food services and accommodation\" sectors. In other words, the sectors in which the impact was significant in the two countries were different. The reason is that the main uses of NG are different in the two countries. Because the main fuel of the metal product creation process in South Korea is NG, and combined heat and power plant and gas for integrated energy consumption have recently increased, the impact seems to have been significant in the aforementioned two sectors.