The study on the relationship between financial ratios and returns from stock price ratios in the Market for Alternative Investment (MAI) aims to study the relationship between financial ratios and returns from the stock price ratio on the Market for Alternative Investment (MAI) and to the relationship between financial ratios and returns from the ratio of stock prices in the primary market The MAI of the companies with a high yield and the companies with low yield. The data is collected from 32 companies 151 samples listed on the Market for Alternative Investment (MAI). They are separated into 74 high-yield companies and 77 low-yield companies. The data is analyzed using descriptive statistical analysis including mean and standard deviation and inferential statistics including Pearson’s Correlation Coefficient Analysis and multiple regression analysis. The results showed that the working capital ratio (Log10CR) and net profit to equity ratio (ROE) were positively correlated with stock price ratio. The fast working capital ratio (Log10QR) and the net profit margin ratio (ROA) have a negative relationship with stock price ratio. The net profit margin (NPM) and the operating profit to income ratio (OIM) have no relationship with the share price ratio.

ECONOMICS VALUE ANALYSIS OF INVESTMENT POLYCYSTALLINE DIAMOND(PCD) CUTTING TOOLS BRAZING. The objective was to study the possible economic investment welding vacuum (High Vacuum Brazing Machine) Case Study JK Precision Seasons Ltd. to produce inserts with diamonds (Diamond Insert) and quality. reduce the cost of production The experiment storage costs during the production process inserts with diamond original method and process used welding machines vacuum (High Vacuum Brazing Machine) by the project matures in 10 years the life cycle of the equipment by the companys accounts. it can be concluded that the project Investment welding machines vacuum (High Vacuum Brazing Machine) is worth the investment. By comparison the production cost of current methods and using new welding machines vacuum (High Vacuum Brazing Machine) found that the cost of production when using welding machines vacuum (High Vacuum Brazing Machine) down 31 baht / piece the production process. down two steps and increased productivity in a new way. 72413 pieces / year When analyzing the cost of Economics found that the value equivalent’ contaminated current net (Net Present Value) Payback period (Payback Period) rate of return of the Project (Internal rate of Return) Previous year current net’ Baht 443902559 Baht rate of return of the project is the of 3172% summarized the’ value. The project studies the possible invest welding vacuum (High vacuum Brazing machine) is suitable for investment.